看看这个哪里出错了

[itelly]

在左键单击时保存位置到pt[]数组中,
然后在右键单击时,让窗口重绘,
在wm_paint消息中绘制图形.

窗口过程如下:

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	int wmId, wmEvent;
	PAINTSTRUCT ps;
	HDC hdc;
	TCHAR szHello[MAX_LOADSTRING];
	static POINT pt[MAXPOINT];
	static int nCount=0;
	int i,j;


	switch (message) 
	{
		case WM_COMMAND:
			wmId    = LOWORD(wParam); 
			wmEvent = HIWORD(wParam); 
			// Parse the menu selections:
			switch (wmId)
			{
				case IDM_ABOUT:
				   DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
				   break;
				case IDM_EXIT:
				   DestroyWindow(hWnd);
				   break;
				default:
				   return DefWindowProc(hWnd, message, wParam, lParam);
			}
			break;
		case WM_LBUTTONDOWN:
			pt[nCount].x=LOWORD(lParam);
			pt[nCount].y=LOWORD(lParam);
			SetPixel(hdc,LOWORD(lParam),HIWORD(lParam),RGB(255,0,0));
			nCount++;
			break;
		case WM_RBUTTONDOWN:
			InvalidateRect(hWnd,NULL,TRUE);
			break;


		case WM_PAINT:
			hdc = BeginPaint(hWnd, &ps);
			// TODO: Add any drawing code here...
			SetCursor(LoadCursor(NULL,IDC_WAIT));
			ShowCursor(TRUE);
			for (i=0;i<nCount-1;i++)
			{
				for (j=i+1;j<nCount;j++)
				{
					MoveToEx(hdc,pt[i].x,pt[i].y,NULL);
					LineTo(hdc,pt[j].x,pt[j].y);

				}
			}
			ShowCursor(FALSE);
			SetCursor(LoadCursor(NULL,IDC_ARROW));

			RECT rt;
			GetClientRect(hWnd, &rt);
			
			EndPaint(hWnd, &ps);
			break;
		case WM_DESTROY:
			PostQuitMessage(0);
			break;
		default:
			return DefWindowProc(hWnd, message, wParam, lParam);
   }
   return 0;
}

可是效果却不是我想要的,这是哪里出错了呢?

[schlafenhamster]

pt[nCount].x=LOWORD(lParam);
pt[nCount].y=HIWORD(lParam);

[itelly]

[Quote=引用 1 楼 的回复:]

pt[nCount].x=LOWORD(lParam);
pt[nCount].y=HIWORD(lParam);
[/Quote]

汗颜啊