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  1. #include <windows.h>
  2.  
  3. HANDLE hFile;
  4. DWORD dwBytes;
  5.  
  6. BITMAPFILEHEADER bmpFileHeader;
  7. BITMAPINFO bmpInfo;
  8.  
  9. LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wp, LPARAM lp) {
  10.   HDC hdc;
  11.   PAINTSTRUCT ps;
  12.   int iScan;
  13.   static BYTE *bPixelBits;
  14.   static int WIDTH = 0;
  15.  
  16.   switch (msg) {
  17.   case WM_DESTROY:
  18.     CloseHandle(hFile);
  19.     free(bPixelBits);
  20.     PostQuitMessage(0);
  21.     return 0;
  22.  
  23.   case WM_CREATE:
  24.     WIDTH = 4 * ((bmpInfo.bmiHeader.biWidth * bmpInfo.bmiHeader.biBitCount + 31) / 32);
  25.     bPixelBits = (BYTE *)malloc(WIDTH);
  26.     return 0;
  27.  
  28.   case WM_PAINT:
  29.     hdc = BeginPaint(hwnd, &ps); {
  30.       for (iScan = 0; iScan < bmpInfo.bmiHeader.biHeight; iScan++) {
  31.         ReadFile(hFile, bPixelBits, WIDTH, &dwBytes, NULL);
  32.         Sleep(10);
  33.         SetDIBitsToDevice(hdc, 
  34.                           0, 0, /* 転送先長方形の左上隅 */
  35.                           bmpInfo.bmiHeader.biWidth, bmpInfo.bmiHeader.biHeight, /* DIB の幅・高さ */
  36.                           0, 0, /* DIB の左隅の論理座標 */
  37.                           iScan, /* DIB 内の開始走査行 */
  38.                           1, /* pPixelBits が示す配列中に含まれている DIB の走査行の数 */
  39.                           bPixelBits, &bmpInfo, DIB_RGB_COLORS);
  40.  
  41.       }
  42.       SetFilePointer(hFile,
  43.                        sizeof(BITMAPFILEHEADER) + sizeof(BITMAPINFOHEADER), NULL, FILE_BEGIN);
  44.     } EndPaint(hwnd, &ps);
  45.     return 0;
  46.  
  47.   }
  48.   return DefWindowProc(hwnd, msg, wp, lp);
  49. }
  50.  
  51. int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR lpCmdLine, int nCmdShow) {
  52.   HWND hwnd;
  53.   MSG msg;
  54.   WNDCLASS winc;
  55.   DWORD dwBytes;
  56.   hFile = CreateFile(lpCmdLine, GENERIC_READ, 0, NULL,
  57.                      OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
  58.   if (hFile == INVALID_HANDLE_VALUE) {
  59.     MessageBox(NULL, TEXT("failure oppening file"), TEXT("ERROR"), MB_OK);
  60.     return -1;
  61.   }
  62.   ReadFile(hFile, &bmpFileHeader, sizeof(BITMAPFILEHEADER), &dwBytes, NULL);
  63.   if (bmpFileHeader.bfType != 0x4d42) {
  64.     MessageBox(NULL, TEXT("This file is not bitmap."), TEXT("ERROR"), MB_OK);
  65.     return -1;
  66.   }
  67.   ReadFile(hFile, &bmpInfo, sizeof(BITMAPINFOHEADER), &dwBytes, NULL);
  68.  
  69.   winc.style = CS_HREDRAW | CS_VREDRAW;
  70.   winc.lpfnWndProc = WndProc;
  71.   winc.cbClsExtra = 0;
  72.   winc.cbWndExtra = 0;
  73.   winc.hInstance = hInstance;
  74.   winc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
  75.   winc.hCursor = LoadCursor(NULL, IDC_ARROW);
  76.   winc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
  77.   winc.lpszMenuName = NULL;
  78.   winc.lpszClassName = TEXT("KITTY");
  79.  
  80.   if (!RegisterClass(&winc)) return -1;
  81.  
  82.   hwnd = CreateWindow(TEXT("KITTY"), TEXT("KITTY on your lap"),
  83.                       WS_OVERLAPPEDWINDOW | WS_VISIBLE,
  84.                       CW_USEDEFAULT, CW_USEDEFAULT,
  85.                       CW_USEDEFAULT, CW_USEDEFAULT,
  86.                       NULL, NULL, hInstance, NULL);
  87.  
  88.   if (hwnd == NULL) return 0;
  89.  
  90.   while (GetMessage(&msg, NULL, 0, 0)) {
  91.       TranslateMessage(&msg);
  92.       DispatchMessage(&msg);
  93.   }
  94.   return msg.wParam;
  95. }
  96. /* end */
  97.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:1:21: fatal error: windows.h: No such file or directory
 #include <windows.h>
                     ^
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/W8wuOF
language:
C++ (gcc 8.3)
created:
6 years ago
visibility:
public

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