纯C++创建Windows窗体(理解WinMain()与WndProc())

转 http://www.cnblogs.com/greatverve/archive/2010/06/01/cpp-first-form.html

Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->#include <windows.h>

#include <mmsystem.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM); //声名消息处理函数(处理windows和接收windows消息)

//hInstance:系统为窗口分配的实例号,2和3忘了.4是显示方式

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,PSTR szCmdLine, int iCmdShow)

{

static TCHAR szAppName[] = TEXT ("HelloWin") ; //窗体名

HWND hwnd;//句柄

MSG msg;//消息体

WNDCLASS wndclass;//这义一个窗体类实例

//设置窗体参数

wndclass.style = CS_HREDRAW | CS_VREDRAW ; //样式

wndclass.cbClsExtra = 0 ;

wndclass.cbWndExtra = 0 ;

wndclass.hInstance = hInstance ;//窗体实例名，由windows自动分发

wndclass.hIcon = LoadIcon (NULL, IDI_APPLICATION) ;//显示上面的图标titlte

wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;//窗口光标

wndclass.hbrBackground= (HBRUSH) GetStockObject (WHITE_BRUSH) ;//背景刷

wndclass.lpszMenuName=NULL;

wndclass.lpfnWndProc=WndProc;//设置窗体接收windws消息函数

wndclass.lpszClassName= szAppName;//窗体类名

if (!RegisterClass (&wndclass))//注册窗体类

{

MessageBox ( NULL, TEXT ("This program requires Windows NT!"), szAppName, MB_ICONERROR) ;

return 0 ;

};

//创建一个窗体。已分配内存。返回一个窗体句柄

hwnd = CreateWindow( szAppName, // window class name

TEXT ("The Hello Program"), // window caption

WS_OVERLAPPEDWINDOW, // window style

CW_USEDEFAULT,// initial x position

CW_USEDEFAULT,// initial y position

CW_USEDEFAULT,// initial x size

CW_USEDEFAULT,// initial y size

NULL, // parent window handle

NULL, // window menu handle

hInstance, // program instance handle

NULL) ;

ShowWindow (hwnd,iCmdShow);//显示窗口

UpdateWindow (hwnd) ;//更新窗体

while(GetMessage(&msg,NULL,0,0))

{

TranslateMessage (&msg);//翻译消息并发送到windows消息队列

DispatchMessage (&msg) ;//接收信息

}

return msg.wParam ;

}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)//消息的处理程序

{

HDC hdc ;

PAINTSTRUCT ps ;

RECT rect ;

switch (message)

{

case WM_CREATE:

//PlaySound(TEXT("HelloWin.wav"),NULL,SND_FILENAME|SND_ASYNC);

return 0 ;

case WM_PAINT:

hdc = BeginPaint (hwnd, &ps) ;

TextOut(hdc,0,0,"大气象",strlen("大气象"));

EndPaint (hwnd, &ps) ;

return 0 ;

case WM_DESTROY:

PostQuitMessage (0) ;

return 0 ;

}

return DefWindowProc (hwnd, message, wParam, lParam) ;

}纯C++创建Windows窗体(理解WinMain()与WndProc())