Win32程序(1) 小小窗口

别的不说，先看代码

//MsgProcCorrespond.h#ifndef MSG_PROC_STRUCT_2010_04_07_17_39_34#define MSG_PROC_STRUCT_2010_04_07_17_39_34typedef long MsgProcFun(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam);struct MsgProcCorr{int msg;MsgProcFun *msgProc;};#endif//EnterPoint.cpp#include <Windows.h>#include "MsgProcCorrespond.h"#define MsgProcCorrArrLength(x) sizeof(x)/sizeof(x[0])//---------------------------------------------------------------------------------------long WmCreateProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);long WmDestroyProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);long WmCommandProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);//windows message & procdure correspondMsgProcCorr winMsgProcCorrs[] = {WM_CREATE,WmCreateProc,WM_DESTROY,WmDestroyProc,WM_COMMAND,WmCommandProc,};//---------------------------------------------------------------------------------------/*//long Cmd***Proc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);//command message & procdure correspondMsgProcCorr cmdMsgProcCorrs{//IDM_COMMANDID,Cmd***Proc};*///function declareLRESULT CALLBACK WndProcdure(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam);//窗口消息处理程序BOOL InitApp();//注册窗口类BOOL InitInstance(int nCmdShow);//创建窗口实例//global parameterHINSTANCE_hInstance;//program instanceHWND_hWnd;//window handleconst wchar_t _winClassName[] = L"className";//system enter point functionint WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){InitApp();InitInstance(nCmdShow);MSG msg;while (GetMessage(&msg, NULL, NULL, NULL)){::TranslateMessage(&msg);::DispatchMessage(&msg);}return 0;}//register window classBOOL InitApp(){WNDCLASS wc; wc.style = CS_HREDRAW | CS_VREDRAW; wc.lpfnWndProc = WndProcdure; wc.cbClsExtra = 0; wc.cbWndExtra = 0; wc.hInstance = _hInstance; wc.hIcon = LoadIcon(NULL, IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, IDC_ARROW); wc.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH); wc.lpszMenuName = NULL; wc.lpszClassName = _winClassName; return (RegisterClass(&wc));}//create windows instatnceBOOL InitInstance(int nCmdShow){LPCWSTR appCaption = L"window caption.";//Create Window _hWnd = CreateWindow(_winClassName,appCaption,WS_OVERLAPPEDWINDOW,CW_USEDEFAULT, CW_USEDEFAULT,400, 120,NULL, NULL,_hInstance,NULL);if (!_hWnd) return FALSE;::ShowWindow(_hWnd, nCmdShow);::UpdateWindow(_hWnd);return TRUE;}//---------------------------------------------------------------------------------------// windows message procdure//---------------------------------------------------------------------------------------LRESULT CALLBACK WndProcdure(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){for (int i = 0; i < MsgProcCorrArrLength(winMsgProcCorrs); ++i){if (winMsgProcCorrs[i].msg == msg){return winMsgProcCorrs[i].msgProc(hWnd, msg, wParam, lParam);}}return DefWindowProc(hWnd, msg, wParam, lParam);}//---------------------------------------------------------------------------------------// WM_CREATE //---------------------------------------------------------------------------------------long WmCreateProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){return 0;}//---------------------------------------------------------------------------------------// WM_DESTROY//---------------------------------------------------------------------------------------long WmDestroyProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){::PostQuitMessage(0);return 0;}//---------------------------------------------------------------------------------------// WM_COMMAND//---------------------------------------------------------------------------------------long WmCommandProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){return 0;}

 

这个地方我没有像一般的程序那样将所以的消息处理放在一个函数里面，那里因为觉得有的时候一个消息处理的代码可能很多，眼睛都看乱了

 

头文件定义的是消息ID与处理相应消息的函数指针，这只是产生一个简单的窗口，不过这对于以后要添加一些消息的处理方法来讲很方便程序的改动，只要添加相应的消息处理函数就可以了，比如要添加WM_PAINT这个消息的处理方法，只要按下面的改法就可以

//windows message & procdure correspondMsgProcCorr winMsgProcCorrs[] = {WM_CREATE,WmCreateProc,WM_DESTROY,WmDestroyProc,WM_COMMAND,WmCommandProc,WM_PAINT,WmPaintProc,//添加WM_PAINT & 处理这个消息的函数指针};...//---------------------------------------------------------------------------------------// WM_PAINT//---------------------------------------------------------------------------------------long WmPaintProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){//WM_PAINT 消息处理过程//......return 0;}//---------------------------------------------------------------------------------------// WM_COMMAND//---------------------------------------------------------------------------------------long WmCommandProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){return 0;}//前面要加这个函数的声明喔，要不然会编译，链接的时候会链接不到这个函数的函数体