gethinfo.c

C#一个实例源代码

/*--------------------------------------------------
  GetHInfo.c
  --------------------------------------------------*/

#include <windows.h>
#define BUFFER 80

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

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("GetHInfo") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;
     
     wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc   = MainWndProc ;
     wndclass.cbClsExtra    = 0 ;
     wndclass.cbWndExtra    = 0 ;
     wndclass.hInstance     = hInstance ;
     wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION) ;
     wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW) ;
     wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
     wndclass.lpszMenuName  = NULL ;
     wndclass.lpszClassName = szAppName ;
     
     if (!RegisterClass (&wndclass))
     {
          MessageBox (NULL, TEXT ("Program requires Windows NT!"), 
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
     
     hwnd = CreateWindow (szAppName, TEXT ("Get Hardware Infomation"),
                          WS_OVERLAPPEDWINDOW,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          CW_USEDEFAULT, CW_USEDEFAULT,
                          NULL, NULL, hInstance, NULL) ;
     
     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;
     
     while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}


LRESULT APIENTRY MainWndProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) 
{ 

	static int  cxClient, cyClient ;
     HDC         hdc ;
     PAINTSTRUCT ps ;
	 SYSTEM_INFO siSysInfo;   // struct. for hardware information 
int aTabs[1] = {260};    // tab stop for TabbedTextOut 
 
TCHAR tchBuffer[BUFFER]; // buffer for expanded string 
int nSize;               // size of string 

	 switch (uMsg)
     {

    case WM_PAINT:
          hdc = BeginPaint (hwnd, &ps) ;
  
 
          // Display the "hardware information" header. 
 
          nSize = sprintf(tchBuffer, "Hardware information:"); 
          TextOut(hdc, 15, 20, tchBuffer, nSize); 
 
          // Copy the hardware information to the SYSTEM_INFO structure. 
 
          GetSystemInfo(&siSysInfo); 
 
           // Display the contents of the SYSTEM_INFO structure. 
 
nSize = sprintf(tchBuffer, 
    "OEM ID: %u\tNumber of Processors: %u", 
    siSysInfo.dwOemId, 
    siSysInfo.dwNumberOfProcessors); 
TabbedTextOut(hdc, 25, 40, tchBuffer, 
    nSize, 1, aTabs, 25); 
 
nSize = sprintf(tchBuffer, 
    "Page size: %u\tProcessor Type: %u", 
    siSysInfo.dwPageSize, 
    siSysInfo.dwProcessorType); 
TabbedTextOut(hdc, 25, 60, tchBuffer, 
    nSize, 1, aTabs, 25); 
 
nSize = sprintf(tchBuffer, 
    "Minimum app address: %lx\tMaximum app address: %lx", 
    siSysInfo.lpMinimumApplicationAddress, 
    siSysInfo.lpMaximumApplicationAddress); 
TabbedTextOut(hdc, 25, 80, tchBuffer, 
    nSize, 1, aTabs, 25); 
 
nSize = sprintf(tchBuffer, 
    "Active processor mask: %u", 
    siSysInfo.dwActiveProcessorMask); 
TextOut(hdc, 25, 100, tchBuffer, nSize); 



          EndPaint (hwnd, &ps) ;
          return 0 ;
        

          
     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;
     }
     return DefWindowProc (hwnd, uMsg, wParam, lParam) ;
}