PC版本实现无边框窗口移动和缩放，移动后缩放必然失灵

[newmunga]

1、修改窗口样式SetWindowLong(myWindowHandle, GWL_STYLE, WS_POPUP);
2、在客户区自己创建了一个标题栏，标题栏的背景图ondrag事件里面执行以下代码实现窗口移动

            ReleaseCapture();
            SendMessage(myWindowHandle, WM_NCLBUTTONDOWN, HTCAPTION, 0);
            SendMessage(myWindowHandle, WM_LBUTTONUP, 0, 0);  

3、自己写了一个dll，用SubWndProc方法拦截WndProc方法，WM_NCHITTEST事件里面执行一下代码

				POINT pt;
				pt.x = LOWORD(lParam);
				pt.y = HIWORD(lParam);

				RECT rcClient;
				::GetWindowRect(hWnd, &rcClient);

				if (pt.x >= rcClient.right - 10 && pt.y >= rcClient.bottom - 10)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENWSE)));
					return HTBOTTOMRIGHT;
				}
				else if (pt.x <= rcClient.left + 10 && pt.y >= rcClient.bottom - 10)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENESW)));
					return HTBOTTOMLEFT;
				}
				else if (pt.x <= rcClient.left + 10 && pt.y <= rcClient.top + 10)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENWSE)));
					return HTTOPLEFT;
				}
				else if (pt.x >= rcClient.right - 10 && pt.y <= rcClient.top + 10)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENESW)));
					return HTTOPRIGHT;
				}
				else if (pt.x >= rcClient.right - 5)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZEWE)));
					return HTRIGHT;
				}
				else if (pt.x <= rcClient.left + 5)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZEWE)));
					return HTLEFT;
				}		
				else if (pt.y <= rcClient.top + 5)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENS)));
					return HTTOP;
				}
				else if (pt.y >= rcClient.bottom - 5)
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_SIZENS)));
					return HTBOTTOM;
				}
				else
				{
					SetCursor(LoadCursor(NULL, MAKEINTRESOURCE(IDC_ARROW)));
					return HTCLIENT;
				}

现在遇到的问题是，只要先点击自制标题栏移动了窗口
1、缩放就不起作用了，缩放时鼠标样式变成缩放样式，但是，鼠标拖动后，整个窗口在移动，而不是缩放。
2、最小化以后，鼠标点击任务栏的的窗口，窗口粘在鼠标上跟随鼠标移动，必须点击一下左键后，才不跟随鼠标移动。
3、SendMessage(myWindowHandle, WM_NCLBUTTONDOWN, HTCAPTION, 0);这行报错：An abnormal situation has occurred: the PlayerLoop internal function has been called recursively. Please contact Customer Support with a sample project so that we can reproduce the problem and troubleshoot it.