如何让对话框只能在屏幕一个区域内移动

[sharp0077]

就是那种鼠标左键按住标题栏移动的。

我想让它只能在一个小范围内移动。

求大神指点下

[boylafong]

用函数ClipCursor

[赵4老师]

WM_GETMINMAXINFO The WM_GETMINMAXINFO message is sent to a window when the size or position of the window is about to change. An application can use this message to override the window's default maximized size and position, or its default minimum or maximum tracking size. WM_GETMINMAXINFO lpmmi = (LPMINMAXINFO) lParam; // address of structure Parameters lpmmi Value of lParam. Pointer to a MINMAXINFO structure that contains the default maximized position and dimensions, and the default minimum and maximum tracking sizes. An application can override the defaults by setting the members of this structure. Return Values If an application processes this message, it should return zero. Remarks The maximum tracking size is the largest window size that can be produced by using the borders to size the window. The minimum tracking size is the smallest window size that can be produced by using the borders to size the window. QuickInfo Windows NT: Requires version 3.1 or later. Windows: Requires Windows 95 or later. Windows CE: Unsupported. Header: Declared in winuser.h. See Also Windows Overview, Window Messages, MoveWindow, SetWindowPos, MINMAXINFO

[Eleven]

CWnd::OnWindowPosChanged

[schlafenhamster]

void CxxxxxDlg::OnMoving(UINT fwSide, LPRECT pRect) 
{
	CDialog::OnMoving(fwSide, pRect);
	// TODO: Add your message handler code here
#if 1
#define MOSTLEFT   100
#define MOSTTOP    100
#define MOSTRIGHT  1050
#define MOSTBOTTOM 750
	CRect rect;
	GetWindowRect(&rect);
	afxDump << *pRect << "\n";
	if(pRect->left <=MOSTLEFT)
	{
		pRect->left=MOSTLEFT;
		pRect->right=MOSTLEFT+rect.Width();
	}
	if(pRect->right >=MOSTRIGHT)
	{
		pRect->right=MOSTRIGHT;
		pRect->left=MOSTRIGHT-rect.Width();
	}
	if(pRect->top <=MOSTTOP)
	{
		pRect->top=MOSTTOP;
		pRect->bottom=MOSTTOP+rect.Height();
	}
	if(pRect->bottom >=MOSTBOTTOM)
	{
		pRect->bottom=MOSTBOTTOM;
		pRect->top=MOSTBOTTOM-rect.Height();
	}
#endif
}