reactos/rosapps/tests/mdi/mdi.c

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/*
Thanks to theForger from winprog.org
*/
#include <windows.h>
#include <commctrl.h>
#include <string.h>
#include "resource.h"
const char g_szClassName[] = "myWindowClass";
const char g_szChildClassName[] = "myMDIChildWindowClass";
#define IDC_MAIN_MDI 101
#define IDC_MAIN_TOOL 102
#define IDC_MAIN_STATUS 103
#define IDC_CHILD_EDIT 101
#define ID_MDI_FIRSTCHILD 50000
HWND g_hMDIClient = NULL;
HWND g_hMainWindow = NULL;
BOOL LoadTextFileToEdit(HWND hEdit, LPCTSTR pszFileName)
{
HANDLE hFile;
BOOL bSuccess = FALSE;
hFile = CreateFile(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL,
OPEN_EXISTING, 0, NULL);
if(hFile != INVALID_HANDLE_VALUE)
{
DWORD dwFileSize;
dwFileSize = GetFileSize(hFile, NULL);
if(dwFileSize != 0xFFFFFFFF)
{
LPSTR pszFileText;
pszFileText = GlobalAlloc(GPTR, dwFileSize + 1);
if(pszFileText != NULL)
{
DWORD dwRead;
if(ReadFile(hFile, pszFileText, dwFileSize, &dwRead, NULL))
{
pszFileText[dwFileSize] = 0; // Add null terminator
if(SetWindowText(hEdit, pszFileText))
bSuccess = TRUE; // It worked!
}
GlobalFree(pszFileText);
}
}
CloseHandle(hFile);
}
return bSuccess;
}
BOOL SaveTextFileFromEdit(HWND hEdit, LPCTSTR pszFileName)
{
HANDLE hFile;
BOOL bSuccess = FALSE;
hFile = CreateFile(pszFileName, GENERIC_WRITE, 0, NULL,
CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if(hFile != INVALID_HANDLE_VALUE)
{
DWORD dwTextLength;
dwTextLength = GetWindowTextLength(hEdit);
// No need to bother if there's no text.
if(dwTextLength > 0)
{
LPSTR pszText;
DWORD dwBufferSize = dwTextLength + 1;
pszText = GlobalAlloc(GPTR, dwBufferSize);
if(pszText != NULL)
{
if(GetWindowText(hEdit, pszText, dwBufferSize))
{
DWORD dwWritten;
if(WriteFile(hFile, pszText, dwTextLength, &dwWritten, NULL))
bSuccess = TRUE;
}
GlobalFree(pszText);
}
}
CloseHandle(hFile);
}
return bSuccess;
}
void DoFileOpen(HWND hwnd)
{
OPENFILENAME ofn;
char szFileName[MAX_PATH] = "";
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hwnd;
ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0";
ofn.lpstrFile = szFileName;
ofn.nMaxFile = MAX_PATH;
ofn.Flags = OFN_EXPLORER | OFN_FILEMUSTEXIST | OFN_HIDEREADONLY;
ofn.lpstrDefExt = "txt";
if(GetOpenFileName(&ofn))
{
HWND hEdit = GetDlgItem(hwnd, IDC_CHILD_EDIT);
if(LoadTextFileToEdit(hEdit, szFileName))
{
SendDlgItemMessage(g_hMainWindow, IDC_MAIN_STATUS, SB_SETTEXT, 0, (LPARAM)"Opened...");
SendDlgItemMessage(g_hMainWindow, IDC_MAIN_STATUS, SB_SETTEXT, 1, (LPARAM)szFileName);
SetWindowText(hwnd, szFileName);
}
}
}
void DoFileSave(HWND hwnd)
{
OPENFILENAME ofn;
char szFileName[MAX_PATH] = "";
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hwnd;
ofn.lpstrFilter = "Text Files (*.txt)\0*.txt\0All Files (*.*)\0*.*\0";
ofn.lpstrFile = szFileName;
ofn.nMaxFile = MAX_PATH;
ofn.lpstrDefExt = "txt";
ofn.Flags = OFN_EXPLORER | OFN_PATHMUSTEXIST | OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT;
if(GetSaveFileName(&ofn))
{
HWND hEdit = GetDlgItem(hwnd, IDC_CHILD_EDIT);
if(SaveTextFileFromEdit(hEdit, szFileName))
{
SendDlgItemMessage(g_hMainWindow, IDC_MAIN_STATUS, SB_SETTEXT, 0, (LPARAM)"Saved...");
SendDlgItemMessage(g_hMainWindow, IDC_MAIN_STATUS, SB_SETTEXT, 1, (LPARAM)szFileName);
SetWindowText(hwnd, szFileName);
}
}
}
HWND CreateNewMDIChild(HWND hMDIClient)
{
MDICREATESTRUCT mcs;
HWND hChild;
mcs.szTitle = "[Untitled]";
mcs.szClass = g_szChildClassName;
mcs.hOwner = GetModuleHandle(NULL);
mcs.x = mcs.cx = CW_USEDEFAULT;
mcs.y = mcs.cy = CW_USEDEFAULT;
mcs.style = MDIS_ALLCHILDSTYLES;
hChild = (HWND)SendMessage(hMDIClient, WM_MDICREATE, 0, (LONG)&mcs);
if(!hChild)
{
MessageBox(hMDIClient, "MDI Child creation failed.", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
}
return hChild;
}
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CREATE:
{
HWND hTool;
TBBUTTON tbb[3];
TBADDBITMAP tbab;
HWND hStatus;
int statwidths[] = {100, -1};
CLIENTCREATESTRUCT ccs;
// Create MDI Client
// Find window menu where children will be listed
ccs.hWindowMenu = GetSubMenu(GetMenu(hwnd), 2);
ccs.idFirstChild = ID_MDI_FIRSTCHILD;
g_hMDIClient = CreateWindowEx(WS_EX_CLIENTEDGE, "mdiclient", NULL,
WS_CHILD | WS_CLIPCHILDREN | WS_VSCROLL | WS_HSCROLL | WS_VISIBLE,
CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
hwnd, (HMENU)IDC_MAIN_MDI, GetModuleHandle(NULL), (LPVOID)&ccs);
if(g_hMDIClient == NULL)
MessageBox(hwnd, "Could not create MDI client.", "Error", MB_OK | MB_ICONERROR);
// Create Toolbar
hTool = CreateWindowEx(0, TOOLBARCLASSNAME, NULL, WS_CHILD | WS_VISIBLE, 0, 0, 0, 0,
hwnd, (HMENU)IDC_MAIN_TOOL, GetModuleHandle(NULL), NULL);
if(hTool == NULL)
MessageBox(hwnd, "Could not create tool bar.", "Error", MB_OK | MB_ICONERROR);
// Send the TB_BUTTONSTRUCTSIZE message, which is required for
// backward compatibility.
SendMessage(hTool, TB_BUTTONSTRUCTSIZE, (WPARAM)sizeof(TBBUTTON), 0);
tbab.hInst = HINST_COMMCTRL;
tbab.nID = IDB_STD_SMALL_COLOR;
SendMessage(hTool, TB_ADDBITMAP, 0, (LPARAM)&tbab);
ZeroMemory(tbb, sizeof(tbb));
tbb[0].iBitmap = STD_FILENEW;
tbb[0].fsState = TBSTATE_ENABLED;
tbb[0].fsStyle = TBSTYLE_BUTTON;
tbb[0].idCommand = ID_FILE_NEW;
tbb[1].iBitmap = STD_FILEOPEN;
tbb[1].fsState = TBSTATE_ENABLED;
tbb[1].fsStyle = TBSTYLE_BUTTON;
tbb[1].idCommand = ID_FILE_OPEN;
tbb[2].iBitmap = STD_FILESAVE;
tbb[2].fsState = TBSTATE_ENABLED;
tbb[2].fsStyle = TBSTYLE_BUTTON;
tbb[2].idCommand = ID_FILE_SAVEAS;
SendMessage(hTool, TB_ADDBUTTONS, sizeof(tbb)/sizeof(TBBUTTON), (LPARAM)&tbb);
// Create Status bar
hStatus = CreateWindowEx(0, STATUSCLASSNAME, NULL,
WS_CHILD | WS_VISIBLE | SBARS_SIZEGRIP, 0, 0, 0, 0,
hwnd, (HMENU)IDC_MAIN_STATUS, GetModuleHandle(NULL), NULL);
SendMessage(hStatus, SB_SETPARTS, sizeof(statwidths)/sizeof(int), (LPARAM)statwidths);
SendMessage(hStatus, SB_SETTEXT, 0, (LPARAM)"Hi there :)");
}
break;
case WM_SIZE:
{
HWND hTool;
RECT rcTool;
int iToolHeight;
HWND hStatus;
RECT rcStatus;
int iStatusHeight;
HWND hMDI;
int iMDIHeight;
RECT rcClient;
// Size toolbar and get height
hTool = GetDlgItem(hwnd, IDC_MAIN_TOOL);
SendMessage(hTool, TB_AUTOSIZE, 0, 0);
GetWindowRect(hTool, &rcTool);
iToolHeight = rcTool.bottom - rcTool.top;
// Size status bar and get height
hStatus = GetDlgItem(hwnd, IDC_MAIN_STATUS);
SendMessage(hStatus, WM_SIZE, 0, 0);
GetWindowRect(hStatus, &rcStatus);
iStatusHeight = rcStatus.bottom - rcStatus.top;
// Calculate remaining height and size edit
GetClientRect(hwnd, &rcClient);
iMDIHeight = rcClient.bottom - iToolHeight - iStatusHeight;
hMDI = GetDlgItem(hwnd, IDC_MAIN_MDI);
SetWindowPos(hMDI, NULL, 0, iToolHeight, rcClient.right, iMDIHeight, SWP_NOZORDER);
}
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case ID_FILE_EXIT:
PostMessage(hwnd, WM_CLOSE, 0, 0);
break;
case ID_FILE_NEW:
CreateNewMDIChild(g_hMDIClient);
break;
case ID_FILE_OPEN:
{
HWND hChild = CreateNewMDIChild(g_hMDIClient);
if(hChild)
{
DoFileOpen(hChild);
}
}
break;
case ID_FILE_CLOSE:
{
HWND hChild = (HWND)SendMessage(g_hMDIClient, WM_MDIGETACTIVE,0,0);
if(hChild)
{
SendMessage(hChild, WM_CLOSE, 0, 0);
}
}
break;
case ID_WINDOW_TILE:
SendMessage(g_hMDIClient, WM_MDITILE, 0, 0);
break;
case ID_WINDOW_CASCADE:
SendMessage(g_hMDIClient, WM_MDICASCADE, 0, 0);
break;
default:
{
if(LOWORD(wParam) >= ID_MDI_FIRSTCHILD)
{
DefFrameProc(hwnd, g_hMDIClient, WM_COMMAND, wParam, lParam);
}
else
{
HWND hChild = (HWND)SendMessage(g_hMDIClient, WM_MDIGETACTIVE,0,0);
if(hChild)
{
SendMessage(hChild, WM_COMMAND, wParam, lParam);
}
}
}
}
break;
default:
return DefFrameProc(hwnd, g_hMDIClient, msg, wParam, lParam);
}
return 0;
}
LRESULT CALLBACK MDIChildWndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
switch(msg)
{
case WM_CREATE:
{
HFONT hfDefault;
HWND hEdit;
// Create Edit Control
hEdit = CreateWindowEx(WS_EX_CLIENTEDGE, "EDIT", "",
WS_CHILD | WS_VISIBLE | WS_VSCROLL | WS_HSCROLL | ES_MULTILINE | ES_AUTOVSCROLL | ES_AUTOHSCROLL,
0, 0, 100, 100, hwnd, (HMENU)IDC_CHILD_EDIT, GetModuleHandle(NULL), NULL);
if(hEdit == NULL)
MessageBox(hwnd, "Could not create edit box.", "Error", MB_OK | MB_ICONERROR);
hfDefault = GetStockObject(DEFAULT_GUI_FONT);
SendMessage(hEdit, WM_SETFONT, (WPARAM)hfDefault, MAKELPARAM(FALSE, 0));
}
break;
case WM_MDIACTIVATE:
{
HMENU hMenu, hFileMenu;
UINT EnableFlag;
hMenu = GetMenu(g_hMainWindow);
if(hwnd == (HWND)lParam)
{ //being activated, enable the menus
EnableFlag = MF_ENABLED;
}
else
{ //being de-activated, gray the menus
EnableFlag = MF_GRAYED;
}
EnableMenuItem(hMenu, 1, MF_BYPOSITION | EnableFlag);
EnableMenuItem(hMenu, 2, MF_BYPOSITION | EnableFlag);
hFileMenu = GetSubMenu(hMenu, 0);
EnableMenuItem(hFileMenu, ID_FILE_SAVEAS, MF_BYCOMMAND | EnableFlag);
EnableMenuItem(hFileMenu, ID_FILE_CLOSE, MF_BYCOMMAND | EnableFlag);
EnableMenuItem(hFileMenu, ID_FILE_CLOSEALL, MF_BYCOMMAND | EnableFlag);
DrawMenuBar(g_hMainWindow);
}
break;
case WM_COMMAND:
switch(LOWORD(wParam))
{
case ID_FILE_OPEN:
DoFileOpen(hwnd);
break;
case ID_FILE_SAVEAS:
DoFileSave(hwnd);
break;
case ID_EDIT_CUT:
SendDlgItemMessage(hwnd, IDC_CHILD_EDIT, WM_CUT, 0, 0);
break;
case ID_EDIT_COPY:
SendDlgItemMessage(hwnd, IDC_CHILD_EDIT, WM_COPY, 0, 0);
break;
case ID_EDIT_PASTE:
SendDlgItemMessage(hwnd, IDC_CHILD_EDIT, WM_PASTE, 0, 0);
break;
}
break;
case WM_SIZE:
{
HWND hEdit;
RECT rcClient;
// Calculate remaining height and size edit
GetClientRect(hwnd, &rcClient);
hEdit = GetDlgItem(hwnd, IDC_CHILD_EDIT);
SetWindowPos(hEdit, NULL, 0, 0, rcClient.right, rcClient.bottom, SWP_NOZORDER);
}
return DefMDIChildProc(hwnd, msg, wParam, lParam);
default:
return DefMDIChildProc(hwnd, msg, wParam, lParam);
}
return 0;
}
BOOL SetUpMDIChildWindowClass(HINSTANCE hInstance)
{
WNDCLASSEX wc;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW;
wc.lpfnWndProc = MDIChildWndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, (LPCTSTR)IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_3DFACE+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = g_szChildClassName;
wc.hIconSm = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
if(!RegisterClassEx(&wc))
{
MessageBox(0, "Could Not Register Child Window", "Oh Oh...",
MB_ICONEXCLAMATION | MB_OK);
return FALSE;
}
else
return TRUE;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hwnd;
MSG Msg;
InitCommonControls();
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, (LPCTSTR)IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = MAKEINTRESOURCE(IDR_MAINMENU);
wc.lpszClassName = g_szClassName;
wc.hIconSm = LoadIcon(NULL, (LPCTSTR)IDI_APPLICATION);
if(!RegisterClassEx(&wc))
{
MessageBox(NULL, "Window Registration Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
if(!SetUpMDIChildWindowClass(hInstance))
return 0;
hwnd = CreateWindowEx(
0,
g_szClassName,
"MDI Test Application",
WS_OVERLAPPEDWINDOW | WS_CLIPCHILDREN,
CW_USEDEFAULT, CW_USEDEFAULT, 480, 320,
NULL, NULL, hInstance, NULL);
if(hwnd == NULL)
{
MessageBox(NULL, "Window Creation Failed!", "Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
g_hMainWindow = hwnd;
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
if (!TranslateMDISysAccel(g_hMDIClient, &Msg))
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
}
return Msg.wParam;
}