mirror of
https://github.com/reactos/reactos.git
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200 lines
4.6 KiB
C
200 lines
4.6 KiB
C
/*
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* Copyright 2003 J Brown
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* Copyright 2006 Eric Kohl
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*/
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#include <windows.h>
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#include <tchar.h>
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#define APPNAME _T("Scrnsave")
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LRESULT CALLBACK MazeWndProc(
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HWND hWnd, // window handle
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UINT message, // type of message
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WPARAM wParam, // additional information
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LPARAM lParam); // additional information
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int APIENTRY MazeMain(
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HINSTANCE hInstance,
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HINSTANCE hPrevInstance,
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LPSTR lpCmdLine,
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HWND hParent);
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HINSTANCE hInstance;
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BOOL fullscreen = FALSE;
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LRESULT WINAPI WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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{
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static POINT ptLast;
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static POINT ptCursor;
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static BOOL fFirstTime = TRUE;
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switch (msg)
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{
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case WM_DESTROY:
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PostQuitMessage(0);
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break;
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// break out of screen-saver if any keyboard activity
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case WM_NOTIFY:
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case WM_SYSKEYDOWN:
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PostMessage(hwnd, WM_CLOSE, 0, 0);
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break;
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// break out of screen-saver if any mouse activity
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case WM_LBUTTONDOWN:
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case WM_LBUTTONUP:
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case WM_RBUTTONDOWN:
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case WM_RBUTTONUP:
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case WM_MBUTTONDOWN:
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case WM_MBUTTONUP:
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case WM_MOUSEMOVE:
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// If we've got a parent then we must be a preview
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if(GetParent(hwnd) != 0)
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return 0;
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if(fFirstTime)
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{
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GetCursorPos(&ptLast);
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fFirstTime = FALSE;
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}
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GetCursorPos(&ptCursor);
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// if the mouse has moved more than 3 pixels then exit
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if(abs(ptCursor.x - ptLast.x) >= 3 || abs(ptCursor.y - ptLast.y) >= 3)
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PostMessage(hwnd, WM_CLOSE, 0, 0);
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ptLast = ptCursor;
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return 0;
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}
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return MazeWndProc(hwnd, msg, wParam, lParam);
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}
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HWND InitSaver(HWND hwndParent)
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{
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WNDCLASS wc;
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HWND hwnd;
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ZeroMemory(&wc, sizeof(wc));
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wc.style = CS_HREDRAW | CS_VREDRAW;
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wc.lpfnWndProc = WndProc;
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wc.lpszClassName = APPNAME;
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wc.hbrBackground = (HBRUSH)GetStockObject(BLACK_BRUSH);
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RegisterClass(&wc);
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if (hwndParent != 0)
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{
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RECT rect;
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GetClientRect(hwndParent, &rect);
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hwnd = CreateWindow(APPNAME, APPNAME,
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WS_VISIBLE | WS_CHILD,
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0, 0,
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rect.right,
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rect.bottom,
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hwndParent, 0,
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hInstance, NULL);
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fullscreen = FALSE;
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}
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else
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{
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hwnd = CreateWindow(APPNAME, APPNAME,
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WS_VISIBLE | WS_POPUP | WS_EX_TOPMOST,
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0, 0,
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GetSystemMetrics(SM_CXSCREEN), GetSystemMetrics(SM_CYSCREEN),
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HWND_DESKTOP, 0,
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hInstance, NULL);
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ShowWindow(hwnd, SW_SHOWMAXIMIZED);
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ShowCursor(FALSE);
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fullscreen = TRUE;
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}
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return hwnd;
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}
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void ParseCommandLine(PSTR szCmdLine, int *chOption, HWND *hwndParent)
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{
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int ch = *szCmdLine++;
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if(ch == '-' || ch == '/')
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ch = *szCmdLine++;
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if(ch >= 'A' && ch <= 'Z')
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ch += 'a' - 'A';
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*chOption = ch;
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ch = *szCmdLine++;
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if(ch == ':')
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ch = *szCmdLine++;
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while(ch == ' ' || ch == '\t')
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ch = *szCmdLine++;
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if(isdigit(ch))
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{
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unsigned int i = atoi(szCmdLine - 1);
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*hwndParent = (HWND)i;
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}
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else
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*hwndParent = 0;
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}
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int WINAPI WinMain (HINSTANCE hInst,
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HINSTANCE hPrev,
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LPSTR lpCmdLine,
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int iCmdShow)
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{
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HWND hwndParent;
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HWND hwndChild;
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UINT nPreviousState;
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int chOption;
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hInstance = hInst;
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ParseCommandLine(lpCmdLine, &chOption, &hwndParent);
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SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, TRUE, &nPreviousState, 0);
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switch (chOption)
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{
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case 's':
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hwndChild = InitSaver(0);
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break;
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case 'p':
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hwndChild = InitSaver(hwndParent);
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break;
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case 'c':
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default:
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MessageBox(0,
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_T("No options need to be set."),
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_T("About"),
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MB_OK | MB_ICONWARNING);
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return 0;
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}
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MazeMain(hInst, hPrev, lpCmdLine, hwndChild);
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SystemParametersInfo(SPI_SETSCREENSAVERRUNNING, FALSE, &nPreviousState, 0);
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return 0;
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}
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