packages/services/gfx/mw/v2_0/src/demos/mwin/mstretch.c

   1 /*
   2  * Copyright (c) 2001 Greg Haerr <greg@censoft.com>
   3  *
   4  * Demo program for StretchBlt
   5  */
   6 #define MWINCLUDECOLORS
   7 #include "windows.h"
   8 #include "device.h"
   9
  10 extern MWIMAGEHDR image_penguin;
  11
  12 PMWIMAGEHDR image = &image_penguin;
  13
  14 #define APPCHILD        "test2"
  15
  16 /* forward decls*/
  17 LRESULT CALLBACK ChildWndProc(HWND hwnd,UINT uMsg,WPARAM wp,LPARAM lp);
  18
  19 int
  20 RegisterAppClass(void)
  21 {
  22         WNDCLASS        wc;
  23
  24         wc.style = CS_DBLCLKS | CS_VREDRAW | CS_HREDRAW;
  25         wc.lpfnWndProc = (WNDPROC)ChildWndProc;
  26         wc.cbClsExtra = 0;
  27         wc.cbWndExtra = 0;
  28         wc.hInstance = 0;
  29         wc.hIcon = 0; /*LoadIcon(GetHInstance(), MAKEINTRESOURCE( 1));*/
  30         wc.hCursor = 0; /*LoadCursor(NULL, IDC_ARROW);*/
  31         wc.hbrBackground = (HBRUSH)GetStockObject(LTGRAY_BRUSH);
  32         wc.lpszMenuName = NULL;
  33         wc.lpszClassName =  APPCHILD;
  34         return RegisterClass( &wc);
  35 }
  36
  37 LRESULT CALLBACK
  38 ChildWndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp)
  39 {
  40         HDC             hdcMem;
  41         HBITMAP         hbmp, hbmpOrg;
  42         RECT            rc;
  43         PAINTSTRUCT     ps;
  44
  45         switch(msg) {
  46         case WM_PAINT:
  47                 BeginPaint(hwnd, &ps);
  48                 GetClientRect(hwnd, &rc);
  49
  50                 /* redirect painting to offscreen dc*/
  51                 hdcMem = CreateCompatibleDC(ps.hdc);
  52                 hbmp = CreateCompatibleBitmap(hdcMem, image->width, image->height);
  53                 hbmpOrg = SelectObject(hdcMem, hbmp);
  54
  55                 /* draw onto offscreen dc*/
  56                 DrawDIB(hdcMem, 0, 0, image);
  57
  58                 /* stretch blit offscreen with physical screen*/
  59                 StretchBlt(ps.hdc, 0, 0, rc.right, rc.bottom, hdcMem,
  60                         0, 0, image->width, image->height, MWROP_SRCCOPY);
  61                 DeleteObject(SelectObject(hdcMem, hbmpOrg));
  62                 DeleteDC(hdcMem);
  63                 EndPaint(hwnd, &ps);
  64                 break;
  65         default:
  66                 return DefWindowProc( hwnd, msg, wp, lp);
  67         }
  68         return 0;
  69 }
  70
  71 int WINAPI
  72 WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine,
  73         int nShowCmd)
  74 {
  75         MSG     msg;
  76         RECT    rc;
  77
  78         RegisterAppClass();
  79         GetWindowRect(GetDesktopWindow(), &rc);
  80
  81         /* create penguin windows*/
  82         CreateWindowEx(0L, APPCHILD, "", WS_BORDER | WS_VISIBLE,
  83                 10, 10, 50, 50,
  84                 GetDesktopWindow(), (HMENU)1000, NULL, NULL);
  85
  86         CreateWindowEx(0L, APPCHILD, "", WS_BORDER | WS_VISIBLE,
  87                 10, 70, 200, 200,
  88                 GetDesktopWindow(), (HMENU)1001, NULL, NULL);
  89
  90         /* type ESC to quit...*/
  91         while( GetMessage(&msg, NULL, 0, 0)) {
  92                 TranslateMessage(&msg);
  93                 DispatchMessage(&msg);
  94         }
  95         return 0;
  96 }