mirror of
https://github.com/reactos/reactos.git
synced 2024-11-02 21:09:15 +00:00
757 lines
20 KiB
C
757 lines
20 KiB
C
/*
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* PROJECT: ReactOS Clipboard Viewer
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* LICENSE: GPL-2.0+ (https://spdx.org/licenses/GPL-2.0+)
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* PURPOSE: Provides a view of the contents of the ReactOS clipboard.
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* COPYRIGHT: Copyright 2015-2018 Ricardo Hanke
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* Copyright 2015-2018 Hermes Belusca-Maito
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*/
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#include "precomp.h"
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static const WCHAR szClassName[] = L"ClipBookWClass";
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CLIPBOARD_GLOBALS Globals;
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SCROLLSTATE Scrollstate;
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static void SaveClipboardToFile(void)
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{
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OPENFILENAMEW sfn;
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LPWSTR c;
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WCHAR szFileName[MAX_PATH];
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WCHAR szFilterMask[MAX_STRING_LEN + 10];
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ZeroMemory(&szFilterMask, sizeof(szFilterMask));
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c = szFilterMask + LoadStringW(Globals.hInstance, STRING_FORMAT_NT, szFilterMask, MAX_STRING_LEN) + 1;
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wcscpy(c, L"*.clp");
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ZeroMemory(&szFileName, sizeof(szFileName));
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ZeroMemory(&sfn, sizeof(sfn));
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sfn.lStructSize = sizeof(sfn);
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sfn.hwndOwner = Globals.hMainWnd;
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sfn.hInstance = Globals.hInstance;
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sfn.lpstrFilter = szFilterMask;
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sfn.lpstrFile = szFileName;
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sfn.nMaxFile = ARRAYSIZE(szFileName);
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sfn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
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sfn.lpstrDefExt = L"clp";
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if (!GetSaveFileNameW(&sfn))
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return;
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if (!OpenClipboard(Globals.hMainWnd))
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{
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ShowLastWin32Error(Globals.hMainWnd);
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return;
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}
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WriteClipboardFile(szFileName, CLIP_FMT_NT /* CLIP_FMT_31 */);
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CloseClipboard();
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}
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static void LoadClipboardDataFromFile(LPWSTR lpszFileName)
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{
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if (MessageBoxRes(Globals.hMainWnd, Globals.hInstance,
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STRING_DELETE_MSG, STRING_DELETE_TITLE,
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MB_ICONWARNING | MB_YESNO) != IDYES)
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{
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return;
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}
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if (!OpenClipboard(Globals.hMainWnd))
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{
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ShowLastWin32Error(Globals.hMainWnd);
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return;
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}
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EmptyClipboard();
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ReadClipboardFile(lpszFileName);
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CloseClipboard();
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}
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static void LoadClipboardFromFile(void)
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{
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OPENFILENAMEW ofn;
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LPWSTR c;
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WCHAR szFileName[MAX_PATH];
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WCHAR szFilterMask[MAX_STRING_LEN + 10];
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ZeroMemory(&szFilterMask, sizeof(szFilterMask));
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c = szFilterMask + LoadStringW(Globals.hInstance, STRING_FORMAT_GEN, szFilterMask, MAX_STRING_LEN) + 1;
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wcscpy(c, L"*.clp");
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ZeroMemory(&szFileName, sizeof(szFileName));
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ZeroMemory(&ofn, sizeof(ofn));
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ofn.lStructSize = sizeof(ofn);
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ofn.hwndOwner = Globals.hMainWnd;
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ofn.hInstance = Globals.hInstance;
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ofn.lpstrFilter = szFilterMask;
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ofn.lpstrFile = szFileName;
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ofn.nMaxFile = ARRAYSIZE(szFileName);
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ofn.Flags = OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_FILEMUSTEXIST;
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if (!GetOpenFileNameW(&ofn))
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return;
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LoadClipboardDataFromFile(szFileName);
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}
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static void LoadClipboardFromDrop(HDROP hDrop)
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{
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WCHAR szFileName[MAX_PATH];
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DragQueryFileW(hDrop, 0, szFileName, ARRAYSIZE(szFileName));
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DragFinish(hDrop);
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LoadClipboardDataFromFile(szFileName);
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}
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static void SetDisplayFormat(UINT uFormat)
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{
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RECT rc;
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CheckMenuItem(Globals.hMenu, Globals.uCheckedItem, MF_BYCOMMAND | MF_UNCHECKED);
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Globals.uCheckedItem = uFormat + CMD_AUTOMATIC;
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CheckMenuItem(Globals.hMenu, Globals.uCheckedItem, MF_BYCOMMAND | MF_CHECKED);
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if (uFormat == 0)
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{
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Globals.uDisplayFormat = GetAutomaticClipboardFormat();
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}
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else
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{
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Globals.uDisplayFormat = uFormat;
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}
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GetClipboardDataDimensions(Globals.uDisplayFormat, &rc);
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Scrollstate.CurrentX = Scrollstate.CurrentY = 0;
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Scrollstate.iWheelCarryoverX = Scrollstate.iWheelCarryoverY = 0;
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UpdateWindowScrollState(Globals.hMainWnd, rc.right, rc.bottom, &Scrollstate);
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InvalidateRect(Globals.hMainWnd, NULL, TRUE);
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}
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static void InitMenuPopup(HMENU hMenu, LPARAM index)
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{
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if ((GetMenuItemID(hMenu, 0) == CMD_DELETE) || (GetMenuItemID(hMenu, 1) == CMD_SAVE_AS))
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{
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if (CountClipboardFormats() == 0)
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{
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EnableMenuItem(hMenu, CMD_DELETE, MF_GRAYED);
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EnableMenuItem(hMenu, CMD_SAVE_AS, MF_GRAYED);
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}
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else
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{
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EnableMenuItem(hMenu, CMD_DELETE, MF_ENABLED);
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EnableMenuItem(hMenu, CMD_SAVE_AS, MF_ENABLED);
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}
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}
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DrawMenuBar(Globals.hMainWnd);
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}
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static void UpdateDisplayMenu(void)
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{
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UINT uFormat;
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HMENU hMenu;
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WCHAR szFormatName[MAX_FMT_NAME_LEN + 1];
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hMenu = GetSubMenu(Globals.hMenu, DISPLAY_MENU_POS);
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while (GetMenuItemCount(hMenu) > 1)
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{
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DeleteMenu(hMenu, 1, MF_BYPOSITION);
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}
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if (CountClipboardFormats() == 0)
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return;
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if (!OpenClipboard(Globals.hMainWnd))
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return;
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AppendMenuW(hMenu, MF_SEPARATOR, 0, NULL);
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/* Display the supported clipboard formats first */
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for (uFormat = EnumClipboardFormats(0); uFormat;
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uFormat = EnumClipboardFormats(uFormat))
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{
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if (IsClipboardFormatSupported(uFormat))
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{
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RetrieveClipboardFormatName(Globals.hInstance, uFormat, TRUE,
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szFormatName, ARRAYSIZE(szFormatName));
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AppendMenuW(hMenu, MF_STRING, CMD_AUTOMATIC + uFormat, szFormatName);
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}
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}
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/* Now display the unsupported clipboard formats */
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for (uFormat = EnumClipboardFormats(0); uFormat;
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uFormat = EnumClipboardFormats(uFormat))
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{
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if (!IsClipboardFormatSupported(uFormat))
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{
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RetrieveClipboardFormatName(Globals.hInstance, uFormat, TRUE,
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szFormatName, ARRAYSIZE(szFormatName));
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AppendMenuW(hMenu, MF_STRING | MF_GRAYED, 0, szFormatName);
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}
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}
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CloseClipboard();
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}
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static int OnCommand(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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switch (LOWORD(wParam))
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{
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case CMD_OPEN:
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{
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LoadClipboardFromFile();
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break;
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}
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case CMD_SAVE_AS:
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{
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SaveClipboardToFile();
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break;
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}
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case CMD_EXIT:
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{
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PostMessageW(Globals.hMainWnd, WM_CLOSE, 0, 0);
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break;
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}
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case CMD_DELETE:
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{
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if (MessageBoxRes(Globals.hMainWnd, Globals.hInstance,
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STRING_DELETE_MSG, STRING_DELETE_TITLE,
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MB_ICONWARNING | MB_YESNO) != IDYES)
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{
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break;
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}
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DeleteClipboardContent();
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break;
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}
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case CMD_AUTOMATIC:
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{
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SetDisplayFormat(0);
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break;
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}
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case CMD_HELP:
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{
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HtmlHelpW(Globals.hMainWnd, L"clipbrd.chm", 0, 0);
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break;
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}
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case CMD_ABOUT:
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{
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WCHAR szTitle[MAX_STRING_LEN];
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LoadStringW(Globals.hInstance, STRING_CLIPBOARD, szTitle, ARRAYSIZE(szTitle));
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ShellAboutW(Globals.hMainWnd, szTitle, NULL,
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LoadIconW(Globals.hInstance, MAKEINTRESOURCEW(CLIPBRD_ICON)));
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break;
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}
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default:
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{
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break;
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}
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}
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return 0;
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}
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static void OnPaint(HWND hWnd, WPARAM wParam, LPARAM lParam)
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{
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HDC hdc;
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PAINTSTRUCT ps;
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COLORREF crOldBkColor, crOldTextColor;
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RECT rc;
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if (!OpenClipboard(Globals.hMainWnd))
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return;
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hdc = BeginPaint(hWnd, &ps);
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/* Erase the background if needed */
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if (ps.fErase)
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FillRect(ps.hdc, &ps.rcPaint, (HBRUSH)(COLOR_WINDOW + 1));
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/* Set the correct background and text colors */
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crOldBkColor = SetBkColor(ps.hdc, GetSysColor(COLOR_WINDOW));
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crOldTextColor = SetTextColor(ps.hdc, GetSysColor(COLOR_WINDOWTEXT));
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/* Realize the clipboard palette if there is one */
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RealizeClipboardPalette(ps.hdc);
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switch (Globals.uDisplayFormat)
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{
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case CF_NONE:
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{
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/* The clipboard is empty */
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break;
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}
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case CF_DSPTEXT:
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case CF_TEXT:
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case CF_OEMTEXT:
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case CF_UNICODETEXT:
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{
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DrawTextFromClipboard(Globals.uDisplayFormat, ps, Scrollstate);
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break;
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}
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case CF_DSPBITMAP:
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case CF_BITMAP:
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{
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BitBltFromClipboard(ps, Scrollstate, SRCCOPY);
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break;
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}
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case CF_DIB:
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case CF_DIBV5:
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{
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SetDIBitsToDeviceFromClipboard(Globals.uDisplayFormat, ps, Scrollstate, DIB_RGB_COLORS);
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break;
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}
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case CF_DSPMETAFILEPICT:
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case CF_METAFILEPICT:
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{
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GetClientRect(hWnd, &rc);
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PlayMetaFileFromClipboard(hdc, &rc);
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break;
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}
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case CF_DSPENHMETAFILE:
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case CF_ENHMETAFILE:
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{
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GetClientRect(hWnd, &rc);
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PlayEnhMetaFileFromClipboard(hdc, &rc);
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break;
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}
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// case CF_PALETTE:
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// TODO: Draw a palette with squares filled with colors.
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// break;
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case CF_OWNERDISPLAY:
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{
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HGLOBAL hglb;
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PPAINTSTRUCT pps;
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hglb = GlobalAlloc(GMEM_MOVEABLE, sizeof(ps));
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if (hglb)
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{
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pps = GlobalLock(hglb);
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CopyMemory(pps, &ps, sizeof(ps));
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GlobalUnlock(hglb);
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SendClipboardOwnerMessage(TRUE, WM_PAINTCLIPBOARD,
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(WPARAM)hWnd, (LPARAM)hglb);
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GlobalFree(hglb);
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}
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break;
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}
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case CF_HDROP:
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{
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GetClientRect(hWnd, &rc);
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HDropFromClipboard(hdc, &rc);
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break;
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}
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default:
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{
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GetClientRect(hWnd, &rc);
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DrawTextFromResource(Globals.hInstance, ERROR_UNSUPPORTED_FORMAT,
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hdc, &rc, DT_CENTER | DT_WORDBREAK | DT_NOPREFIX);
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break;
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}
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}
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/* Restore the original colors */
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SetTextColor(ps.hdc, crOldTextColor);
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SetBkColor(ps.hdc, crOldBkColor);
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EndPaint(hWnd, &ps);
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CloseClipboard();
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}
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static LRESULT WINAPI MainWndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
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{
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switch(uMsg)
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{
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case WM_CREATE:
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{
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TEXTMETRICW tm;
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HDC hDC = GetDC(hWnd);
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/*
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* Note that the method with GetObjectW just returns
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* the original parameters with which the font was created.
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*/
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if (GetTextMetricsW(hDC, &tm))
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{
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Globals.CharWidth = tm.tmMaxCharWidth; // tm.tmAveCharWidth;
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Globals.CharHeight = tm.tmHeight + tm.tmExternalLeading;
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}
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ReleaseDC(hWnd, hDC);
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Globals.hMenu = GetMenu(hWnd);
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Globals.hWndNext = SetClipboardViewer(hWnd);
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// For now, the Help dialog item is disabled because of lacking of HTML support
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EnableMenuItem(Globals.hMenu, CMD_HELP, MF_BYCOMMAND | MF_GRAYED);
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UpdateLinesToScroll(&Scrollstate);
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UpdateDisplayMenu();
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SetDisplayFormat(0);
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DragAcceptFiles(hWnd, TRUE);
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break;
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}
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case WM_CLOSE:
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{
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DestroyWindow(hWnd);
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break;
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}
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case WM_DESTROY:
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{
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ChangeClipboardChain(hWnd, Globals.hWndNext);
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if (Globals.uDisplayFormat == CF_OWNERDISPLAY)
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{
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HGLOBAL hglb;
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PRECT prc;
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hglb = GlobalAlloc(GMEM_MOVEABLE, sizeof(*prc));
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if (hglb)
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{
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prc = GlobalLock(hglb);
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SetRectEmpty(prc);
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GlobalUnlock(hglb);
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SendClipboardOwnerMessage(TRUE, WM_SIZECLIPBOARD,
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(WPARAM)hWnd, (LPARAM)hglb);
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GlobalFree(hglb);
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}
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}
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PostQuitMessage(0);
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break;
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}
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case WM_PAINT:
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{
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OnPaint(hWnd, wParam, lParam);
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break;
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}
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case WM_KEYDOWN:
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{
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OnKeyScroll(hWnd, wParam, lParam, &Scrollstate);
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break;
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}
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case WM_MOUSEWHEEL:
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case WM_MOUSEHWHEEL:
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{
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OnMouseScroll(hWnd, uMsg, wParam, lParam, &Scrollstate);
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break;
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}
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case WM_HSCROLL:
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{
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// NOTE: Windows uses an offset of 16 pixels
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OnScroll(hWnd, SB_HORZ, wParam, 5, &Scrollstate);
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break;
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}
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case WM_VSCROLL:
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{
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// NOTE: Windows uses an offset of 16 pixels
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OnScroll(hWnd, SB_VERT, wParam, 5, &Scrollstate);
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break;
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}
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case WM_SIZE:
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{
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RECT rc;
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if (Globals.uDisplayFormat == CF_OWNERDISPLAY)
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{
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HGLOBAL hglb;
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PRECT prc;
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hglb = GlobalAlloc(GMEM_MOVEABLE, sizeof(*prc));
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if (hglb)
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{
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prc = GlobalLock(hglb);
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if (wParam == SIZE_MINIMIZED)
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SetRectEmpty(prc);
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else
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GetClientRect(hWnd, prc);
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GlobalUnlock(hglb);
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SendClipboardOwnerMessage(TRUE, WM_SIZECLIPBOARD,
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(WPARAM)hWnd, (LPARAM)hglb);
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GlobalFree(hglb);
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}
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break;
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}
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GetClipboardDataDimensions(Globals.uDisplayFormat, &rc);
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UpdateWindowScrollState(hWnd, rc.right, rc.bottom, &Scrollstate);
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// NOTE: There still are little problems drawing
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// the background when displaying clipboard text.
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if (!IsClipboardFormatSupported(Globals.uDisplayFormat) ||
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Globals.uDisplayFormat == CF_DSPTEXT ||
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Globals.uDisplayFormat == CF_TEXT ||
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Globals.uDisplayFormat == CF_OEMTEXT ||
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Globals.uDisplayFormat == CF_UNICODETEXT)
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{
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InvalidateRect(Globals.hMainWnd, NULL, TRUE);
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}
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else
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{
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InvalidateRect(Globals.hMainWnd, NULL, FALSE);
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}
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break;
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}
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case WM_CHANGECBCHAIN:
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{
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/* Transmit through the clipboard viewer chain */
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if ((HWND)wParam == Globals.hWndNext)
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{
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Globals.hWndNext = (HWND)lParam;
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}
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else if (Globals.hWndNext != NULL)
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{
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SendMessageW(Globals.hWndNext, uMsg, wParam, lParam);
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}
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break;
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}
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case WM_DESTROYCLIPBOARD:
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break;
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case WM_RENDERALLFORMATS:
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{
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/*
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* When the user has cleared the clipboard via the DELETE command,
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* we (clipboard viewer) become the clipboard owner. When we are
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* subsequently closed, this message is then sent to us so that
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* we get a chance to render everything we can. Since we don't have
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|
* anything to render, just empty the clipboard.
|
|
*/
|
|
DeleteClipboardContent();
|
|
break;
|
|
}
|
|
|
|
case WM_RENDERFORMAT:
|
|
// TODO!
|
|
break;
|
|
|
|
case WM_DRAWCLIPBOARD:
|
|
{
|
|
UpdateDisplayMenu();
|
|
SetDisplayFormat(0);
|
|
|
|
/* Pass the message to the next window in clipboard viewer chain */
|
|
SendMessageW(Globals.hWndNext, uMsg, wParam, lParam);
|
|
break;
|
|
}
|
|
|
|
case WM_COMMAND:
|
|
{
|
|
if ((LOWORD(wParam) > CMD_AUTOMATIC))
|
|
{
|
|
SetDisplayFormat(LOWORD(wParam) - CMD_AUTOMATIC);
|
|
}
|
|
else
|
|
{
|
|
OnCommand(hWnd, uMsg, wParam, lParam);
|
|
}
|
|
break;
|
|
}
|
|
|
|
case WM_INITMENUPOPUP:
|
|
{
|
|
InitMenuPopup((HMENU)wParam, lParam);
|
|
break;
|
|
}
|
|
|
|
case WM_DROPFILES:
|
|
{
|
|
LoadClipboardFromDrop((HDROP)wParam);
|
|
break;
|
|
}
|
|
|
|
case WM_PALETTECHANGED:
|
|
{
|
|
/* Ignore if this comes from ourselves */
|
|
if ((HWND)wParam == hWnd)
|
|
break;
|
|
|
|
/* Fall back to WM_QUERYNEWPALETTE */
|
|
}
|
|
|
|
case WM_QUERYNEWPALETTE:
|
|
{
|
|
BOOL Success;
|
|
HDC hDC;
|
|
|
|
if (!OpenClipboard(Globals.hMainWnd))
|
|
return FALSE;
|
|
|
|
hDC = GetDC(hWnd);
|
|
if (!hDC)
|
|
{
|
|
CloseClipboard();
|
|
return FALSE;
|
|
}
|
|
|
|
Success = RealizeClipboardPalette(hDC);
|
|
|
|
ReleaseDC(hWnd, hDC);
|
|
CloseClipboard();
|
|
|
|
if (Success)
|
|
{
|
|
InvalidateRect(hWnd, NULL, TRUE);
|
|
UpdateWindow(hWnd);
|
|
return TRUE;
|
|
}
|
|
return FALSE;
|
|
}
|
|
|
|
case WM_SYSCOLORCHANGE:
|
|
{
|
|
SetDisplayFormat(Globals.uDisplayFormat);
|
|
break;
|
|
}
|
|
|
|
case WM_SETTINGCHANGE:
|
|
{
|
|
if (wParam == SPI_SETWHEELSCROLLLINES)
|
|
{
|
|
UpdateLinesToScroll(&Scrollstate);
|
|
}
|
|
break;
|
|
}
|
|
|
|
default:
|
|
{
|
|
return DefWindowProc(hWnd, uMsg, wParam, lParam);
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR lpCmdLine, int nCmdShow)
|
|
{
|
|
MSG msg;
|
|
HACCEL hAccel;
|
|
HWND hPrevWindow;
|
|
WNDCLASSEXW wndclass;
|
|
WCHAR szBuffer[MAX_STRING_LEN];
|
|
|
|
hPrevWindow = FindWindowW(szClassName, NULL);
|
|
if (hPrevWindow)
|
|
{
|
|
BringWindowToFront(hPrevWindow);
|
|
return 0;
|
|
}
|
|
|
|
switch (GetUserDefaultUILanguage())
|
|
{
|
|
case MAKELANGID(LANG_HEBREW, SUBLANG_DEFAULT):
|
|
SetProcessDefaultLayout(LAYOUT_RTL);
|
|
break;
|
|
|
|
default:
|
|
break;
|
|
}
|
|
|
|
ZeroMemory(&Globals, sizeof(Globals));
|
|
Globals.hInstance = hInstance;
|
|
|
|
ZeroMemory(&wndclass, sizeof(wndclass));
|
|
wndclass.cbSize = sizeof(wndclass);
|
|
wndclass.lpfnWndProc = MainWndProc;
|
|
wndclass.hInstance = hInstance;
|
|
wndclass.hIcon = LoadIconW(hInstance, MAKEINTRESOURCEW(CLIPBRD_ICON));
|
|
wndclass.hCursor = LoadCursorW(0, IDC_ARROW);
|
|
wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
|
|
wndclass.lpszMenuName = MAKEINTRESOURCEW(MAIN_MENU);
|
|
wndclass.lpszClassName = szClassName;
|
|
|
|
if (!RegisterClassExW(&wndclass))
|
|
{
|
|
ShowLastWin32Error(NULL);
|
|
return 0;
|
|
}
|
|
|
|
ZeroMemory(&Scrollstate, sizeof(Scrollstate));
|
|
|
|
LoadStringW(hInstance, STRING_CLIPBOARD, szBuffer, ARRAYSIZE(szBuffer));
|
|
Globals.hMainWnd = CreateWindowExW(WS_EX_CLIENTEDGE | WS_EX_ACCEPTFILES,
|
|
szClassName,
|
|
szBuffer,
|
|
WS_OVERLAPPEDWINDOW | WS_HSCROLL | WS_VSCROLL,
|
|
CW_USEDEFAULT,
|
|
CW_USEDEFAULT,
|
|
CW_USEDEFAULT,
|
|
CW_USEDEFAULT,
|
|
NULL,
|
|
NULL,
|
|
Globals.hInstance,
|
|
NULL);
|
|
if (!Globals.hMainWnd)
|
|
{
|
|
ShowLastWin32Error(NULL);
|
|
return 0;
|
|
}
|
|
|
|
ShowWindow(Globals.hMainWnd, nCmdShow);
|
|
UpdateWindow(Globals.hMainWnd);
|
|
|
|
hAccel = LoadAcceleratorsW(Globals.hInstance, MAKEINTRESOURCEW(ID_ACCEL));
|
|
if (!hAccel)
|
|
{
|
|
ShowLastWin32Error(Globals.hMainWnd);
|
|
}
|
|
|
|
/* If the user provided a path to a clipboard data file, try to open it */
|
|
if (__argc >= 2)
|
|
LoadClipboardDataFromFile(__wargv[1]);
|
|
|
|
while (GetMessageW(&msg, 0, 0, 0))
|
|
{
|
|
if (!TranslateAcceleratorW(Globals.hMainWnd, hAccel, &msg))
|
|
{
|
|
TranslateMessage(&msg);
|
|
DispatchMessageW(&msg);
|
|
}
|
|
}
|
|
|
|
return (int)msg.wParam;
|
|
}
|