ビットマップを使ったブラシ描画

CreatePatternBrush関数でビットマップをブラシとして設定できます。

この画像をパターンとして利用します。

 

〇実行結果

四角形の中をビットマップのパターンで塗りつぶしています。

〇プログラム例

 

  1. #include <windows.h>
  2.  
  3. static LRESULT CALLBACK WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
  4. {
  5.     HDC hdc;
  6.     PAINTSTRUCT ps;
  7.     LPSTR str = TEXT("こんにちは、日本");
  8.     static HBITMAP hForeBmp;
  9.     static HFONT hFont[2];
  10.     LPSTR FORE_BitMapFile = TEXT("カップ.bmp");
  11.     static BITMAP bmpFore;
  12.     static HBRUSH hBrush;
  13.  
  14.     switch (uMsg)
  15.     {
  16.     case WM_DESTROY:
  17.         DeleteObject(hForeBmp);
  18.         DeleteObject(hFont[0]);
  19.  
  20.         PostQuitMessage(0);
  21.         return 0;
  22.  
  23.     case WM_CREATE:
  24.         hFont[0] = CreateFont(
  25.             40, 0, 0, 0,
  26.             FW_NORMAL, FALSE, FALSE, FALSE,
  27.             SHIFTJIS_CHARSET, OUT_DEFAULT_PRECIS,
  28.             CLIP_DEFAULT_PRECIS, DEFAULT_QUALITY,
  29.             VARIABLE_PITCH | FF_DONTCARE, L"メイリオ"
  30.         );
  31.         ShowWindow(hWnd, SW_SHOW);
  32.  
  33.         hForeBmp = LoadImage(NULL, FORE_BitMapFile, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
  34.         hBrush = CreatePatternBrush(hForeBmp);
  35.  
  36.         return 0;
  37.  
  38.     case WM_PAINT:
  39.         hdc = BeginPaint(hWnd, &ps);
  40.         SelectObject(hdc, hFont[0]);
  41.         SetTextColor(hdc, RGB(0, 0xFF, 0));
  42.         TextOut(hdc, 0, 0, str, lstrlen(str));
  43.  
  44.         SelectObject(hdc, hBrush);
  45.         Rectangle(hdc, 10, 30, 410, 250);
  46.  
  47.         EndPaint(hWnd, &ps);
  48.  
  49.         return 0;
  50.     }
  51.  
  52.     return DefWindowProc(hWnd, uMsg, wParam, lParam);
  53.  
  54. }
  55.  
  56. int APIENTRY wWinMain(
  57.     _In_ HINSTANCE hInstance,
  58.     _In_opt_ HINSTANCE hPrevInstance,
  59.     _In_ LPWSTR ipCmdLine,
  60.     _In_ int nCmdShow
  61. ) {
  62.  
  63.     WNDCLASSEXW wcex;
  64.  
  65.     wcex.cbSize = sizeof(WNDCLASSEX);
  66.  
  67.     wcex.style = CS_HREDRAW | CS_VREDRAW;
  68.     wcex.lpfnWndProc = WndProc;
  69.     wcex.cbClsExtra = 0;
  70.     wcex.cbWndExtra = 0;
  71.     wcex.hInstance = hInstance;
  72.     wcex.hIcon = NULL;
  73.     wcex.hCursor = NULL;
  74.     wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
  75.     wcex.lpszMenuName = NULL;
  76.     wcex.lpszClassName = TEXT("TestWindow");
  77.     wcex.hIconSm = NULL;
  78.  
  79.     RegisterClassExW(&wcex);
  80.  
  81.     HWND hWnd = CreateWindowEx(0UL, TEXT("TestWindow"), TEXT("日本"), WS_OVERLAPPEDWINDOW,
  82.         CW_USEDEFAULT, 0, 400, 400, NULL, NULL, hInstance, NULL);
  83.  
  84.     if (!hWnd)
  85.     {
  86.         return FALSE;
  87.     }
  88.  
  89.     MSG msg;
  90.  
  91.     while (GetMessage(&msg, NULL, 0, 0))
  92.     {
  93.         DispatchMessage(&msg);
  94.     }
  95.  
  96.     return (int)msg.wParam;
  97. }