SDK中的消息分解

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在SDK中经常会响应许多消息,这样大量代码在case:中,格式比较难看. 以下是消息分解的例子.

#include <windowsx.h>  消息分解,在<windowsx.h>中定义有宏HANDLE_MSG，例如：  HANDLE_MSG(hWnd,WM_COMMAND,command)  HANDLE_MSG(hWnd,WM_CREATE,create)  HANDLE_MSG(hWnd,WM_PAINT,paint)  HANDLE_MSG(hWnd,WM_DESTROY,destroy)  相应的定义函数如下：  BOOL NEAR PASCAL TWnd_OnCreate(HWND hWnd, CREATESTRUCT FAR* lpCreateStruct)  VOID NEAR PASCAL TWnd_OnSize(HWND hWnd, UINT state, int cx, int cy)   void command(HWND hwnd,int icmd,HWND hctl,UINT ucode)  BOOL create(HWND hwnd,LPCREATESTRUCT lpcreatestruct)  void paint(HWND hwnd)  void destroy(HWND hwnd)  PRIVATE VOID NEAR PASCAL TWnd_OnTimer(HWND hWnd,UINT id)  void Scrawl_OnKeyDown(HWND hwnd, UINT vk, BOOL fDown, int cRepeat, UINT flags)  其它的例子在MSDN中用HANDLE_MSG搜索到，这样可使程序简洁易懂