helloworld.c

C#一个实例源代码

/*-----------------------------------------------------------------------------------------------------------
  HelloWorld.c
------------------------------------------------------------------------------------------------------------*/

#include <windows.h>
#include <windows.c>
#include"resource.h"


LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
DWORD WINAPI Thread1(LPVOID);
DWORD WINAPI Thread2(LPVOID);
HANDLE hThread;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PSTR szCmdLine, int iCmdShow)
{
     static TCHAR szAppName[] = TEXT ("HelloWorld") ;
     HWND         hwnd ;
     MSG          msg ;
     WNDCLASS     wndclass ;
	 HMENU        hMenu;

     wndclass.style         = CS_HREDRAW | CS_VREDRAW ;
     wndclass.lpfnWndProc   = WndProc ;
     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 ("This program requires Windows NT!"), 
                      szAppName, MB_ICONERROR) ;
          return 0 ;
     }
	 hMenu=LoadMenu(hInstance,szAppName );
     
     hwnd = CreateWindow (
		                   szAppName,                 
                          TEXT ("Hello World!"),  
                          WS_OVERLAPPEDWINDOW
                          |WS_HSCROLL|WS_VSCROLL,
     
                          CW_USEDEFAULT,               
                          CW_USEDEFAULT,             
                          CW_USEDEFAULT,              
                          CW_USEDEFAULT,               
                          NULL,                       
                          hMenu,                       
                          hInstance,                  
                          NULL) ;                     
     
     ShowWindow (hwnd, iCmdShow) ;
     UpdateWindow (hwnd) ;
     
     while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ;
}
//回调函数1
LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
     DWORD ThreadID;
	 DWORD id;
	 HDC hDCT; 
	 
     switch (message)
     {            
     case WM_DESTROY:
          PostQuitMessage (0) ;
          return 0 ;
	 case WM_LBUTTONDOWN:
		     //创建线程并运行
             hDCT=GetDC(hwnd);
			 hThread=CreateThread(NULL,0,Thread1,hDCT,NULL,&ThreadID);
			 return 0;
			 break;
	  case WM_RBUTTONDOWN:
		     //创建线程并运行
             hDCT=GetDC(hwnd);
			 hThread=CreateThread(NULL,0,Thread2,hDCT,NULL,&ThreadID);
			 return 0;
			 break;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}

DWORD WINAPI Thread1(LPVOID param)
{
     HANDLE hMyMapObj;
	 char* cMyMapView;
	 char cInput[128];
	 HANDLE hMyMapFile;

	 //新建一个文件
	 hMyMapFile=CreateFile("C:\\Mark\\Examples\\CreateFileMapping\\FileMap.TXT",GENERIC_READ|GENERIC_WRITE,0,NULL,OPEN_ALWAYS,FILE_ATTRIBUTE_NORMAL,0);
     //建立映射对象
	 hMyMapObj=CreateFileMapping(hMyMapFile,NULL,PAGE_READWRITE,0,0x1000,"C:\\Mark\\Examples\\CreateFileMapping\\ShareMap.obj");
	 //把映射对象映射到内存中
	 cMyMapView=(char*)MapViewOfFile(hMyMapObj,FILE_MAP_READ|FILE_MAP_WRITE,0,0,0);
	 sprintf(cInput,"0x%xThread1 modified this file!!",GetCurrentThreadID());
	 //向内存写入文字
	 memcpy(cMyMapView,cInput,strlen(cInput));
	 UnmapViewOfFile(cMyMapView);


	 MessageBox (NULL, TEXT ("Thread1 processed!"), 
                      "tips", MB_ICONINFORMATION) ;
	 return 1;

}

DWORD WINAPI Thread2(LPVOID param)
{
     HANDLE hMyMapObj2;
	 char* cMyMapView2;
	 char cOutput[128];
	 HANDLE hMyMapFile2;

	 //打开Thread1创建的文件映射对象
     hMyMapObj2=OpenFileMapping(FILE_MAP_READ,FALSE,"C:\\Mark\\Examples\\CreateFileMapping\\ShareMap.obj");
     cMyMapView2=(char*)MapViewOfFile(hMyMapFile2,FILE_MAP_READ,0,0,0);
	 strcpy(cOutput,cMyMapView2);
	 MessageBox (NULL, cOutput, 
                      "tips", MB_ICONINFORMATION) ;
	 UnmapViewOfFile(cMyMapView2);
	 return 1;

}