src/wgl/wglfontbitmaps.c

   1 /*
   2  * Copyright (C) 2016, VMware, Inc.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice shall be included
  12  * in all copies or substantial portions of the Software.
  13  *
  14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  15  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17  * THE AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  18  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  19  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  20  */
  21
  22 #include <windows.h>
  23 #include <stdlib.h>
  24 #include <GL/gl.h>
  25
  26 int
  27 main(int argc, char *argv[])
  28 {
  29    WNDCLASS wc;
  30    HWND hwnd;
  31    HDC hdc;
  32    PIXELFORMATDESCRIPTOR pfd;
  33    int iPixelFormat;
  34    HGLRC hglrc;
  35
  36    ZeroMemory(&wc, sizeof wc);
  37    wc.style = CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
  38    wc.lpfnWndProc = DefWindowProc;
  39    wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
  40    wc.hCursor = LoadCursor(NULL, IDC_ARROW);
  41    wc.hbrBackground = (HBRUSH) (COLOR_BTNFACE + 1);
  42    wc.lpszClassName = "wglfont";
  43
  44    if (!RegisterClass(&wc)) {
  45       abort();
  46    }
  47
  48    hwnd = CreateWindowEx(0,
  49                          wc.lpszClassName,
  50                          "wglfont",
  51                          WS_VISIBLE | WS_CLIPSIBLINGS | WS_CLIPCHILDREN | WS_TILEDWINDOW,
  52                          CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
  53                          NULL, NULL,
  54                          wc.hInstance,
  55                          NULL);
  56    if (!hwnd) {
  57       abort();
  58    }
  59
  60    hdc = GetDC(hwnd);
  61    if (!hdc) {
  62       abort();
  63    }
  64
  65    ZeroMemory(&pfd, sizeof pfd);
  66    pfd.nSize = sizeof pfd;
  67    pfd.nVersion = 1;
  68    pfd.dwFlags = PFD_DOUBLEBUFFER | PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL;
  69    pfd.iPixelType = PFD_TYPE_RGBA;
  70    pfd.cColorBits = 24;
  71    pfd.cDepthBits = 0;
  72    pfd.iLayerType = PFD_MAIN_PLANE;
  73
  74    iPixelFormat = ChoosePixelFormat(hdc, &pfd);
  75    if (!iPixelFormat) {
  76       abort();
  77    }
  78
  79    if (!SetPixelFormat(hdc, iPixelFormat, &pfd)) {
  80       abort();
  81    }
  82
  83    hglrc = wglCreateContext(hdc);
  84    if (!hglrc) {
  85       abort();
  86    }
  87
  88    wglMakeCurrent(hdc, hglrc);
  89
  90    glClearColor(0.0, 0.0, 0.0, 1.0);
  91    glClear(GL_COLOR_BUFFER_BIT);
  92
  93    SelectObject(hdc, GetStockObject(SYSTEM_FONT));
  94
  95    wglUseFontBitmaps(hdc, 0, 256, 1000);
  96
  97    glListBase(1000);
  98
  99    glCallLists(12, GL_UNSIGNED_BYTE, "Hello World!");
 100
 101    SwapBuffers(hdc);
 102
 103    Sleep(1000);
 104
 105    wglMakeCurrent(NULL, NULL);
 106
 107    wglDeleteContext(hglrc);
 108
 109    ReleaseDC(hwnd, hdc);
 110
 111    DestroyWindow(hwnd);
 112
 113    return 0;
 114 }