Win32的代码，无语法错误，但是不出现窗口

[yingzijuntuan]

代码如下：

#include <Windows.h>
#include <iostream>
using namespace std ; 
LRESULT CALLBACK ZhqProc(
  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 wndclass ; 
	wndclass.style= CS_HREDRAW | CS_VREDRAW;
	wndclass.lpfnWndProc=ZhqProc;
	wndclass.cbClsExtra=0;
	wndclass.cbWndExtra=0;
	wndclass.hInstance=hInstance ; 
	wndclass.hIcon=LoadIcon(NULL,IDI_HAND);
	wndclass.hCursor=LoadCursor(NULL,IDC_ARROW);
	wndclass.hbrBackground=(HBRUSH)COLOR_BACKGROUND;
	wndclass.lpszMenuName=NULL;
	wndclass.lpszClassName="Zhq";

	RegisterClass(&wndclass);

	HWND hwnd ;
	hwnd=CreateWindow("Zhq","hehe",WS_OVERLAPPEDWINDOW,100,100,400,400,NULL,NULL,hInstance,NULL);

	ShowWindow(hwnd,SW_SHOWNORMAL);
	MSG msg ;
	while(GetMessage(&msg,hwnd,0,0))
	{
		TranslateMessage(&msg);
		DispatchMessage(&msg);
	}

}

LRESULT CALLBACK ZhqProc(
  HWND hwnd,      // handle to window
  UINT uMsg,      // message identifier
  WPARAM wParam,  // first message parameter
  LPARAM lParam   // second message parameter
)
{
	switch(uMsg)
	{
	case WM_LBUTTONDOWN:
//		double xPos = GET_X_LPARAM(lParam); 
//		double yPos = GET_Y_LPARAM(lParam); 

		POINTS points;
		points=MAKEPOINTS(lParam);
		cout<<points.x<<endl;
		cout<<points.y<<endl;
		break;
	default:

		DefWindowProc(
					 hwnd,      // handle to window
					  uMsg,       // message identifier
					  wParam,  // first message parameter
					  lParam   // second message parameter
					);
		break;

	}
	return 0;
}

还有一个问题，CreateWindow函数里面有一个参数是dwStyle，ShowWindow里面的nCmdShow，假如我把前面的弄成最小化，后面的最大化，那最后窗口会怎么显示？

[movsd]

default:
         return DefWindowProc(
                     hwnd,      // handle to window
                      uMsg,       // message identifier
                      wParam,  // first message parameter
                      lParam   // second message parameter
                    );
        break;

[lovecjj19910205]

改成 return DefWindowProc( hwnd, // handle to window uMsg, // message identifier wParam, // first message parameter lParam // second message parameter );