#include <Windows.h>
#include <IOSTREAM>

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

int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,
 int iCmdShow)
{
printf("aaaaaaaaa");
        system("pause"); /////////////为什么我在这里加入的PRINTF没有反应,但是会出现按下任意键继续,然后才开始显示正常窗口?什么原因

 static TCHAR szAppName[] = TEXT ("hellowin");
 HWND hwnd;
 MSG msg;
 WNDCLASS   wndclass;

 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;

RegisterClass(&wndclass);
 hwnd = CreateWindow(szAppName, //window class name
     TEXT("hellowin"),//window caption
     WS_OVERLAPPEDWINDOW,//window style
     CW_USEDEFAULT,//initial x position
     CW_USEDEFAULT,//initial y position
     CW_USEDEFAULT,//initial x size
     CW_USEDEFAULT,//initial y size
     NULL,//parent window handle
     NULL,//window menu handle
     hInstance,//program instance handle
     NULL);//creation parameters

 ShowWindow(hwnd,iCmdShow);
 UpdateWindow(hwnd);

 while (GetMessage(&msg,NULL,0,0))
 {
  TranslateMessage(&msg);
  DispatchMessage(&msg);
 }
 return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{ HDC hdc;
 PAINTSTRUCT ps;
 //TCHAR szBuffer[10];
 //TEXTMETRIC tm;
 RECT rect;
 switch(message)
 {
 case WM_CREATE:
      
  return 0;

 case WM_PAINT:
  hdc = BeginPaint(hwnd,&ps);

        GetClientRect(hwnd,&rect);

  DrawText (hdc,TEXT("win7hello!!!!"),-1,&rect,
   DT_SINGLELINE|DT_CENTER|DT_VCENTER);
   EndPaint(hwnd,&ps);
  return 0 ;

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

 

亲，你可能还没摆脱控制台程序的思想。。在一个win32程序中使用printf虽然不属违规，但终究没什么意思。

我就是不明白，为什么PRINTF出不来但是PAUSE能出得来