generic.cpp

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原创最新推荐文章于 2024-08-23 20:09:54 发布 · 431 阅读

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#null #application #callback #include #command

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本文介绍了一个基于Windows的应用程序框架实现过程，包括窗口类注册、主窗口创建及消息循环处理等核心步骤，并展示了如何通过不同消息响应来控制应用的行为。

name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"> #include <windows.h>
#include "generic.h"
#if defined (win32)
#define IS_WIN32 TRUE
#else
#define IS_WIN32 FALSE
#endif

HINSTANCE hInst; // current instance
LPCTSTR lpszAppName = "Generic";
LPCTSTR lpszTitle = "Generic Application";
BOOL RegisterWin95(CONST WNDCLASS* lpwc);

int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)
{
   MSG msg;
   HWND hWnd;
   WNDCLASS wc;

   wc.style          = CS_HREDRAW | CS_VREDRAW;
   wc.lpfnWndProc    = (WNDPROC)WndProc;
   wc.cbClsExtra     = 0;
   wc.cbWndExtra     = 0;
   wc.hInstance      = 0;
   wc.hIcon          = LoadIcon(hInstance, lpszAppName);
   wc.hCursor        = LoadCursor(NULL, IDC_ARROW);
   wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
   wc.lpszMenuName   = lpszAppName;
   wc.lpszClassName = lpszAppName;

   if(!RegisterWin95(&wc))
      return false;
   hInst = hInstance;
   hWnd = CreateWindow (lpszAppName,
                        lpszTitle,
                        WS_OVERLAPPEDWINDOW,
                        CW_USEDEFAULT, 0,
                        CW_USEDEFAULT, 0,
                        NULL,
                        NULL,
                        hInstance,
                        NULL
                       );
   if(!hWnd)
      return false;
   ShowWindow(hWnd, nCmdShow);
   UpdateWindow(hWnd);
   while(GetMessage(&msg, NULL, 0,0))
    {
      TranslateMessage(&msg);
      DispatchMessage(&msg);
    }
   return(msg.wParam);
}

BOOL RegisterWin95(CONST WNDCLASS* lpwc)
{
WNDCLASSEX wcex;

   wcex.style           = lpwc->style;
   wcex.lpfnWndProc     = lpwc->lpfnWndProc;
   wcex.cbClsExtra      = lpwc->cbClsExtra;
   wcex.cbWndExtra      = lpwc->cbWndExtra;
   wcex.hInstance       = lpwc->hInstance;
   wcex.hIcon           = lpwc->hIcon;
   wcex.hCursor         = lpwc->hCursor;
   wcex.hbrBackground   = lpwc->hbrBackground;
   wcex.lpszMenuName    = lpwc->lpszMenuName;
   wcex.lpszClassName   = lpwc->lpszClassName;
   wcex.cbSize          = sizeof(WNDCLASSEX);
   wcex.hIconSm         = LoadIcon(wcex.hInstance, "SMALL");
   return RegisterClassEx(&wcex);
}

LRESULT CALLBACK WndProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
   switch(uMsg)
    {
      case WM_COMMAND:
         switch(LOWORD(wParam))
          {
            case IDM_TEST :
               break;
            case IDM_EXIT :
               DestroyWindow(hWnd);
               break;
          }
         break;
      case WM_DESTROY :
         PostQuitMessage(0);
         break;
      default:
         return (DefWindowProc(hWnd, uMsg, wParam, lParam));
    }
   return(0L);
}