V C6.0++ 创建窗口

#include "stdafx.h"

#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);

int APIENTRY WinMain(HINSTANCE hInstance, //应用程序的实例句柄，

HINSTANCE hPrevInstance,

LPSTR lpCmdLine, //命令行

int nCmdShow) //显示方式

{

MSG msg;

HWND hWnd;

char szTitle[]="系统信息"; // The title bar text

char szWindowClass[]="popMsg"; // The title bar text

WNDCLASSEX wcex={0};

wcex.cbSize = sizeof(WNDCLASSEX); //WNDCLASSEX结构体大小

wcex.style = CS_HREDRAW | CS_VREDRAW; //位置改变时重绘

wcex.lpfnWndProc = (WNDPROC)WndProc; //消息处理函数

wcex.hInstance = 0; //当前实例句柄

wcex.hbrBackground = (HBRUSH)COLOR_WINDOWFRAME; //背景色

wcex.lpszClassName = szWindowClass; //参窗口类名

wcex.hIcon =0; //图标

wcex.hCursor =LoadCursor(NULL, IDC_ARROW); //光标

wcex.lpszMenuName =0; //菜单名称

wcex.hIconSm =0; //最小化图标

RegisterClassEx(&wcex); //注册窗口类

hWnd = CreateWindow(szWindowClass, szTitle, WS_SYSMENU|WS_VISIBLE, //创建窗口

CW_USEDEFAULT,CW_USEDEFAULT, 400, 300, NULL, NULL, 0, NULL);

if (!hWnd)

{

return FALSE;

}

ShowWindow(hWnd, nCmdShow);

UpdateWindow(hWnd);

while (GetMessage(&msg, NULL, 0, 0)) // 消息循环:

{

TranslateMessage(&msg); //转化虚拟按键到字符消息

DispatchMessage(&msg); //分派消息调用回调函数

}

return msg.wParam;

}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

{

PAINTSTRUCT ps;

HDC hdc;

RECT rect;

switch (message)

{

case WM_PAINT: //重绘消息

hdc = BeginPaint(hWnd, &ps);

GetClientRect(hWnd, &rect);

MoveToEx(hdc,10,10,0);

SelectObject( hdc,::CreatePen(PS_SOLID,1,RGB(0xFF,0,0)));

LineTo(hdc,100,200);

// DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER);

EndPaint(hWnd, &ps);

break;

case WM_CREATE:

RegisterHotKey(hWnd ,1, 0 ,0x41 );

break;

case WM_HOTKEY:

MessageBox(0,0,0,0);

break;

case WM_TIMER:

break;

case WM_DESTROY: //窗口销毁消息

PostQuitMessage(0);

break;

default:

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

}

return 0;

}

VC6.0 编译通过。