helloworld.c

C#一个实例源代码

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

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


LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
LRESULT CALLBACK NewWndProc (HWND, UINT, WPARAM, LPARAM);
DWORD WINAPI Thread4(LPVOID);
HANDLE hThread;
HANDLE hSecondWnd;//句柄
HINSTANCE hInst;

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 ;
     
	 hInst= hInstance ;
     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_RBUTTONDOWN:
			 //保存当前主线程的句柄   ***********问题所在************
			 ThreadID=GetCurrentThreadId();
			 hThread=CreateThread(NULL,0,Thread4,(VOID*)ThreadID,NULL,&id);
			 return 0;
			 break;
     }
     return DefWindowProc (hwnd, message, wParam, lParam) ;
}

//回调函数2
LRESULT CALLBACK NewWndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    if (message==WM_RBUTTONDOWN)
	{
		SetFocus(hwnd);
	}
    return DefWindowProc (hwnd, message, wParam, lParam) ;
}


DWORD WINAPI Thread4(LPVOID param)  //生成新窗口
{
    HWND hWndNew;
	DWORD ThreadID;
	MSG msg;
    
	ThreadID=(DWORD)param;
	hWndNew= CreateWindow (
		                   "CreateByThread",                 
                          TEXT ("CreatByThread!"),  
                          WS_OVERLAPPEDWINDOW
                          |WS_HSCROLL|WS_VSCROLL,
                          CW_USEDEFAULT,               
                          CW_USEDEFAULT,             
                          CW_USEDEFAULT,              
                          CW_USEDEFAULT,               
                          NULL,                       
                          NULL,                       
                          hInst,                  
                          NULL) ;
	SetWindowLong(hWndNew,GWL_WNDPROC,(DWORD)NewWndProc);
	SetWindowPos(hWndNew,NULL,0,0,0,0,SWP_NOMOVE|SWP_NOSIZE|SWP_NOZORDER|SWP_FRAMECHANGED);
	ShowWindow(hWndNew,SW_NORMAL);
	UpdateWindow (hWndNew) ;
	//把当前的线程和主线程连接起来
	AttachThreadInput(GetCurrentThreadId(),ThreadID,TRUE);
    
	while (GetMessage (&msg, NULL, 0, 0))
     {
          TranslateMessage (&msg) ;
          DispatchMessage (&msg) ;
     }
     return msg.wParam ; 
}