Automatically Resize CRichEditCtrl and Dialog

[EonStrife]

Hi,
I have a Dialog, and a CRichEditCtrl inside it. I set a string (which can be multiple lines) to the CRichEditCtrl programmatically (setWindowText).
What I need is, how to make the CRichEditCtrl and Dialog (because the CRichEditCtrl takes up whole space in the Dialog) resize automatically depending on the size of the shown string so that the string fits into CRichEditCtrl nicely without any need of scrollbars.
Thanks

[VictorN]

APIs ::MoveWindow or::SetWindowPos as well as their wrappers CWnd::MoveWindow or CWnd::SetWindowPos work for any window. You only have to obtain the rect size your string needs to.

[EonStrife]

Hmm...thanks, but how to obtain the rect size of the multiline string ?

[salman108]

here you go

void CClientDlg::OnSize(UINT nType, int cx, int cy) 
{
	
		CDialog::OnSize(nType, cx, cy);
		
		// TODO: Add your message handler code here
		
		static CRect rectClient;	// Client Rectangle
		
		// First child window
		CWnd* pWnd = GetWindow(GW_CHILD);
		
		// Runs loop to take into account of every child window
		while (pWnd)
		{
			// Gets control rectangle in window cordinates with respect to dialog
			CRect rectCtrl;
			pWnd->GetWindowRect(rectCtrl);
			ScreenToClient(rectCtrl);
			
			// Calculates scale factors for resizing
			double xScale = 1.0 * cx / rectClient.Width();
			double yScale = 1.0 * cy / rectClient.Height();
			
			// Calculates scaled control size
			rectCtrl.left = (int) (rectCtrl.left * xScale);
			rectCtrl.top = (int) (rectCtrl.top * yScale);
			rectCtrl.right = (int) (rectCtrl.right * xScale);
			rectCtrl.bottom = (int) (rectCtrl.bottom * yScale);
			
			// Sizes the control
			pWnd->MoveWindow(rectCtrl);
			
			// Searches for next child window
			pWnd = pWnd->GetWindow(GW_HWNDNEXT);
			
		}
		
		// Stores client rectangle size for next sizing
		rectClient = CRect(0, 0, cx, cy);
	
	
	
	// TODO: Add your message handler code here
	
}

You just implement the OnSize handler, and this is what it should look like.

now keep putting as many controls as u want on it.

Enjoyy

[Ejaz]

Also take a look at EasySize .

[EonStrife]

Hmm...thanks guy, maybe I should say like this :
given font settings and a string :"Space, the Final Frontier.\nThese are the voyages of starship Enterprise...". Then, the Richedit together with Dialog will resize according to the total size of the string. Maybe what I need is, how to calculcate total size (in pixels ?) of the string ?

[VictorN]

Have you tried the CDC:: DrawText (or API DrawText) with DT_CALCRECT flag?

[EonStrife]

Thanks, that DrawText and MoveWindow do the trick

And, I have another question...my program is running in the background...How can I get the topleft coordinate and width/height of the current active window ?

Using GetSystemMetrics I can only get the width/height of the whole screen, but not the active window...

Thanks

[humptydumpty]

use ::GetActiveWindow() to get the handle of your currently active Window and can use GetWindowRect() method

Thanx