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。