Window API GameMap

最新推荐文章于 2024-09-02 13:34:28 发布

原创最新推荐文章于 2024-09-02 13:34:28 发布 · 492 阅读

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CC 4.0 BY-SA版权

文章标签：

#api #null #winapi #callback #include #image

本文介绍了一个简单的Windows程序，用于加载不同的地图图像并将其绘制到窗口中。通过使用位图资源文件和GDI函数，实现了地图图像的加载和显示。此外，还展示了如何创建兼容设备上下文以提高绘图效率。

#include "GameMap.h"

int WINAPI WinMain(
                   HINSTANCE hInstance,
                   HINSTANCE hPrevInstance,
                   LPSTR lpCmdLine,
                   int nShowCmd
                   )
{
   MSG msg;
   HDC hdc;
   int i;
   char filename[20] = "";

   MyRegisterClass(hInstance);

   InitInstance(hInstance, nShowCmd);

   for(i = 0; i < 3; i++)
   {
       sprintf(filename, "Image/map%d.bmp", i);
       map[i] = (HBITMAP)LoadImage(hInstance, filename, IMAGE_BITMAP, 100, 100, LR_LOADFROMFILE);
   }



    hdc = GetDC(hWnd);

    MyPaint(hdc);
   ReleaseDC(hWnd, hdc);

   while(GetMessage(&msg, NULL, 0, 0))
   {
       TranslateMessage(&msg);
       DispatchMessage(&msg);
   }

   return msg.wParam;
}

//****************************************
//
// 注册函数
//
//****************************************
ATOM MyRegisterClass(HINSTANCE hInstance)
{
   WNDCLASSEX wce;

   wce.cbSize = sizeof(wce);
   wce.style = CS_VREDRAW|CS_HREDRAW;
   wce.lpfnWndProc = MyProc;
   wce.cbClsExtra = 0;
   wce.cbWndExtra = 0;
   wce.hInstance = hInstance;
   wce.hIcon = NULL;
   wce.hCursor = LoadCursor(NULL, IDC_CROSS);
   wce.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
   wce.lpszMenuName = NULL;
   wce.lpszClassName = "MyWClass";
   wce.hIconSm = NULL;

   RegisterClassEx(&wce);

   return 0;

}

//****************************************
//
// 创建窗体函数
//
//****************************************
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
   hinst = hInstance;

   hWnd = CreateWindow("MyWClass", "coco", WS_SYSMENU, 100, 100, 300, 350, NULL, NULL, hInstance, NULL);

   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);


   return TRUE;
}

//****************************************
//
// 消息处理函数
//
//****************************************
LRESULT CALLBACK MyProc(
                       HWND hWnd,
                       UINT uMsg,
                       WPARAM wParam,
                       LPARAM lParam
                       )
{
   HDC hdc;
    PAINTSTRUCT ps;

   switch(uMsg)
   {
   case WM_DESTROY:
       PostQuitMessage(0);
       return 0;
       break;
   case WM_PAINT:
       hdc = BeginPaint(hWnd, &ps);
       MyPaint(hdc);
       EndPaint(hWnd, &ps);
       break;
   default:
       return DefWindowProc(hWnd, uMsg, wParam, lParam);
   }
   return 0;
}

//****************************************
//
// 绘图函数
//
//****************************************
void MyPaint(HDC hdc)
{
   mdc = CreateCompatibleDC(hdc);
   fulldc = CreateCompatibleDC(hdc);
   fullmap = CreateCompatibleBitmap(hdc, 300, 300);

   int i, x, y;
    int mapIndex[rows*cols] = {0, 1, 1,
                          0, 1, 1,
                          2, 2, 2
                           };

   SelectObject(fulldc, fullmap);

   for(i = 0; i < 9; i++)
   {
       x = i%rows * 100;
       y = i/3 *100;

       SelectObject(mdc, map[mapIndex[i]]);
       BitBlt(fulldc, x, y, 100, 100, mdc, 0, 0, SRCCOPY);
   }

   SelectObject(fulldc, fullmap);
   BitBlt(hdc, 0, 0, 300, 300, fulldc, 0, 0, SRCCOPY);

   DeleteDC(mdc);
   DeleteDC(fulldc);
   DeleteObject(fullmap);

}