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#include <windows.h>
#include "resource.h"
LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName [] = TEXT ("BitBlt") ;
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;
wndclass.style = CS_HREDRAW |
CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = LoadIcon (NULL,
IDI_INFORMATION) ;
wndclass.hCursor = LoadCursor (NULL,
IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject
(WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;
wndclass.lpszClassName = szAppName ;
if (!RegisterClass (&wndclass))
{
MessageBox (NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ;
return 0 ;
}
hwnd = CreateWindow (szAppName, TEXT ("BitBlt Demo"),
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;
ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;
while (GetMessage (&msg, NULL, 0, 0))
{
TranslateMessage (&msg) ;
DispatchMessage (&msg) ;
}
return msg.wParam ;
}
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM
wParam,LPARAM lParam)
{
static HINSTANCE hInstance;
//static HBITMAP hBitmap;
//static BITMAP bitmap;
static int cxClient, cyClient, cxSource, cySource ;
HDC hdcClient, hdcWindow ;
int x, y ;
PAINTSTRUCT ps ;
switch (message)
{
case WM_CREATE:
hInstance=(HINSTANCE)((LPCREATESTRUCT)lParam)->hInstance;
//hBitmap=LoadBitmap(hInstance,MAKEINTRESOURCE(IDB_BITMAP1));
//GetObject(hBitmap,sizeof(BITMAP),&bitmap);
cxSource = GetSystemMetrics (SM_CXSIZEFRAME) +
GetSystemMetrics (SM_CXSIZE) ;
cySource = GetSystemMetrics (SM_CYSIZEFRAME) +
GetSystemMetrics (SM_CYCAPTION) ;
//cxSource=bitmap.bmWidth;
//cySource=bitmap.bmHeight;
return 0 ;
case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_PAINT:
hdcWindow = GetWindowDC (hwnd) ;
hdcClient = BeginPaint (hwnd, &ps) ;
for (y = 0 ; y < cyClient ; y += cySource)
for (x = 0 ; x < cxClient ; x += cxSource)
{
BitBlt (hdcClient, x, y, cxSource, cySource,
hdcWindow, 0, 0, SRCCOPY) ;
}
ReleaseDC (hwnd, hdcWindow) ;
EndPaint (hwnd, &ps) ;
return 0 ;
case WM_DESTROY:
//DeleteObject(hBitmap);
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}