C / C++ / MFC

BOOL bAllowDragDrop
CPoint m_cpDragOffset;

void CMyView::OnLButtonDown(UINT nFlags, CPoint point) 
{
	cpDragOffset = cpBitmapCoord - point; //This is to have the relative coordinates inside the bitmap while moving

	bAllowDragDrop = TRUE;

	//More code
}

void CMyView::OnLButtonUp(UINT nFlags, CPoint point) 
{
	if (bAllowDragDrop)
	{	cpBitmapCoord = point - cpDragOffset;
		//Save the new coordinates
		bAllowDragDrop = FALSE;
	}

	//More code

	Invalidate ();
	UpdateWindow ();
}

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

WalderMort wrote:

Sounds to me like a binary tree would do what you want. Once you have found the first node, starting with the letter "A", use that node then to find the next highest, either "B" or "AD".

void RecurseSearch( LPTSTR szID )<br />
{<br />
    TCHAR szSearch[ 128 ];<br />
    <br />
    // append the characters one at a time ( do this in a loop )<br />
    _tcscpy( szSearch, szID );<br />
    _tcscat( szID, "A" );<br />
    <br />
    // check if its a hit<br />
    if ( SomeUnknowFunction( szIdSearch ) )<br />
    {<br />
        // Call again until max length is achieved and it's a hit<br />
        RecurseSearch( szSearch );<br />
    }<br />
}