winmain.cpp

vc 中一个窗口的建立 和怎么样写消息循环

#include <windows.h>
#include <stdio.h>
#include <Dbt.h>
#include <WINBASE.h>
#include <winioctl.h>

//#include <AFX.h>



LRESULT CALLBACK WinSunProc(
  HWND hwnd,      // handle to window
  UINT uMsg,      // message identifier
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
);

int WINAPI WinMain(
  HINSTANCE hInstance,      // handle to current instance
  HINSTANCE hPrevInstance,  // handle to previous instance
  LPSTR lpCmdLine,          // command line
  int nCmdShow              // show state
)
{

	WNDCLASS wndcls;
	wndcls.cbClsExtra=0;
	wndcls.cbWndExtra=0;
	wndcls.hbrBackground= (HBRUSH)GetStockObject(WHITE_BRUSH);
	wndcls.hCursor=LoadCursor(NULL,IDC_CROSS);
	wndcls.hIcon=LoadIcon(NULL,IDI_ERROR);
	wndcls.hInstance=hInstance;
	wndcls.lpfnWndProc= WinSunProc;
	wndcls.lpszClassName="Weixin2003";
	wndcls.lpszMenuName=NULL;
	wndcls.style=CS_HREDRAW | CS_VREDRAW;
	RegisterClass(&wndcls);

	HWND hwnd;
	hwnd=CreateWindow("Weixin2003","北京维新科学技术培训中心",WS_OVERLAPPEDWINDOW,
		100,100,600,400,NULL,NULL,hInstance,NULL);

	ShowWindow(hwnd,SW_SHOWNORMAL);
	UpdateWindow(hwnd);

	MSG msg;
	//POINT k;
	while(GetMessage(&msg,NULL,0,0))
	{
	
		TranslateMessage(&msg);
		DispatchMessage(&msg);
		
	}
	return 0;
}

LRESULT CALLBACK WinSunProc(
  HWND hwnd,      // handle to window
  UINT uMsg,      // message identifier
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
)
{
	char        HCName[16];
    int         HCNum;
    HANDLE      hHCDev;
	switch(uMsg)
	{
	case WM_CHAR:
		char szChar[20];
		sprintf(szChar,"char is %d",wParam);
		MessageBox(hwnd,szChar,"weixin",0);
		break;
	case WM_LBUTTONDOWN:
		MessageBox(hwnd,"mouse clicked","weixin",0);
		HDC hdc;
		hdc=GetDC(hwnd);
		TextOut(hdc,0,50,"计算机编程语言培训",strlen("计算机编程语言培训"));
		ReleaseDC(hwnd,hdc);
		break;
	case WM_PAINT:
		HDC hDC;
		PAINTSTRUCT ps;
		hDC=BeginPaint(hwnd,&ps);
		TextOut(hDC,0,0,"维新培训",strlen("维新培训"));
		EndPaint(hwnd,&ps);
		break;
	case WM_CLOSE:
		if(IDYES==MessageBox(hwnd,"是否真的结束？","weixin",MB_YESNO))
		{
			DestroyWindow(hwnd);
		}
		break;
	case WM_DESTROY:
		PostQuitMessage(0);
		break;

    case WM_DEVICECHANGE:
		{
          switch(wParam)
		  {
		  case DBT_DEVICEARRIVAL:          //插入
				{
              //    MessageBox("USB设备插入");
					/*
           HDC hdc;
		   hdc=GetDC(hwnd);
		   TextOut(hdc,0,150,"USB设备插入",strlen("USB设备插入"));
	       ReleaseDC(hwnd,hdc);
		   */
					for (HCNum = 0; HCNum < 10; HCNum++)
					{
							wsprintf(HCName, "\\\\.\\I:", HCNum);
							hHCDev = CreateFile(HCName,
                            GENERIC_WRITE,
                            FILE_SHARE_WRITE,
                            NULL,
                            OPEN_EXISTING,
                            0,
                            NULL);
//		hHCDev1 = INVALID_HANDLE_VALUE;
				   if (hHCDev != INVALID_HANDLE_VALUE)
					{
							//strShow.Format("\r\n找到USB控制器:%d\r\n",HCNum+1);
							//ShowMessage(strShow);
					   if(IDOK==MessageBox(hwnd,"USB设备插入","USB",MB_OK)) //break;
					   {
							HDC hdc;
							DWORD junk;
							hdc=GetDC(hwnd);
							TextOut(hdc,0,200,HCName,strlen("HCName"));
							ReleaseDC(hwnd,hdc);
							DISK_GEOMETRY pdg;
						BOOL	bResult = DeviceIoControl(hHCDev,     // device to be queried
                            IOCTL_DISK_GET_DRIVE_GEOMETRY,     // operation to perform
							NULL, 0,               // no input buffer
							&pdg, sizeof(pdg),     // output buffer
							&junk,                 // # bytes returned
							(LPOVERLAPPED) NULL);  // synchronous I/O

							continue;
					   }

					}
					}
				//	if(IDOK==MessageBox(hwnd,"USB设备插入","USB",MB_OK))
                 if(HCNum == 10)   
					 break;
				}
          case DBT_DEVICEREMOVECOMPLETE:         //移除
          // ShowMessage("USB设备移除");
			  {
				  /*
            HDC hdc;
		   hdc=GetDC(hwnd);
		   TextOut(hdc,0,200,"USB设备移除",strlen("USB设备移除"));
	       ReleaseDC(hwnd,hdc);
		   */
				  if(IDOK==MessageBox(hwnd,"USB设备移除","USB",MB_OK))
             break;
			  }
          
   }
}

	default:
		return DefWindowProc(hwnd,uMsg,wParam,lParam);
	}
	return 0;
}