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How do I reposition and resize a dialog at runtime (programmatically)

epeddyco
epeddyco asked
on
3,052 Views
Last Modified: 2013-11-20
In CView::OnInitialUpdate() of my app, I create a modeless dialog box. I want to be able to set the reposition and resize of the dialog at runtime.  I am having problems with the CWnd::MoveWindow().  I cannot seem to get it to work.  The dialog does not end up in what I think is the correct place.  I tried the following method.

(pseudocode)
CFrameWnd->GetWindowRect(fwRect);
dialog->GetWindowRect(dwRect);
modify dwRect based on fwRect
dialog->MoveWindow(dwRect)

I calculate the new dialog position and size based on the CFrameWnd's position and size.  How do I need to do this?
Ed
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Commented:
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Commented:
I am still having problems with this.  Any more suggestions?

Here is my OnInitialUpdate...
------------------------------------------------------------------
void CBasicTestView::OnInitialUpdate()
{
      CView::OnInitialUpdate();
      
// TODO: Add your specialized code here and/or call the base class

// Goal:
// Create dialog and move it so that the bottom right corner
// of the dialog window rect is aligned with the bottom right
// corner of CBasicTestView Client area

      // Create the dialog
      theBasicDlg = new CBasicDialog;
      theBasicDlg->Create(CBasicDialog::IDD, this);
//      theBasicDlg->ShowWindow(SW_SHOWNORMAL);
//      theBasicDlg->CenterWindow();

      //Get the CView's client area coordinates
      RECT rcViewClientRect;
      GetClientRect(&rcViewClientRect);

      //Get the dialog screen coordinates
      RECT rcDialogWindowRect;
    theBasicDlg->GetWindowRect(&rcDialogWindowRect);

      // Set the Dialogs Bottom right corner to
      // CView client area bottom right
      rcDialogWindowRect.bottom = rcViewClientRect.bottom;
      rcDialogWindowRect.right = rcViewClientRect.right;

      // Calculate ammount to move top,left corner so
      // that size remains the same
      int dv = rcViewClientRect.bottom - rcDialogWindowRect.bottom;
      int dh = rcViewClientRect.right - rcDialogWindowRect.right;
                                                                  
      // Set the Dialogs top left corner so
      // that size remains the same
      rcDialogWindowRect.top  += dv;
      rcDialogWindowRect.left += dh;

    theBasicDlg->MoveWindow(&rcDialogWindowRect);
      theBasicDlg->ShowWindow(SW_SHOWNORMAL);
}

For completeness sake, here is the code for the dialog...
------------------------------------------------------------------
// BasicDialog.h : header file
//

/////////////////////////////////////////////////////////////////////////////
// CBasicDialog dialog

class CBasicDialog : public CDialog
{
// Construction
public:
      CBasicDialog(CWnd* pParent = NULL);   // standard constructor

// Dialog Data
      //{{AFX_DATA(CBasicDialog)
      enum { IDD = IDD_DIALOG1 };
      //}}AFX_DATA


// Overrides
      // ClassWizard generated virtual function overrides
      //{{AFX_VIRTUAL(CBasicDialog)
      protected:
      virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support
      virtual BOOL PreCreateWindow(CREATESTRUCT& cs);
      //}}AFX_VIRTUAL

// Implementation
protected:

      // Generated message map functions
      //{{AFX_MSG(CBasicDialog)
      //}}AFX_MSG
      DECLARE_MESSAGE_MAP()
};

------------------------------------------------------------------
// BasicDialog.cpp : implementation file
//

#include "stdafx.h"
#include "BasicTest.h"
#include "BasicDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CBasicDialog dialog


CBasicDialog::CBasicDialog(CWnd* pParent /*=NULL*/)
      : CDialog(CBasicDialog::IDD, pParent)
{
      //{{AFX_DATA_INIT(CBasicDialog)
      //}}AFX_DATA_INIT
}


void CBasicDialog::DoDataExchange(CDataExchange* pDX)
{
      CDialog::DoDataExchange(pDX);
      //{{AFX_DATA_MAP(CBasicDialog)
      //}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CBasicDialog, CDialog)
      //{{AFX_MSG_MAP(CBasicDialog)
      //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CBasicDialog message handlers


BOOL CBasicDialog::PreCreateWindow(CREATESTRUCT& cs)
{
      // TODO: Add your specialized code here and/or call the base class
      
      return CDialog::PreCreateWindow(cs);
}

Commented:
Try changing your OnInitView function to this:

void CBasicTestView::OnInitialUpdate()
{
CView::OnInitialUpdate();

// TODO: Add your specialized code here and/or call the base class

// Goal:
// Create dialog and move it so that the bottom right corner
// of the dialog window rect is aligned with the bottom right
// corner of CBasicTestView Client area

// Create the dialog
theBasicDlg = new CBasicDialog;
theBasicDlg->Create(CBasicDialog::IDD, this);
// theBasicDlg->ShowWindow(SW_SHOWNORMAL);
// theBasicDlg->CenterWindow();

//Get the CView's screen coordinates
CRect rcViewClientRect;
GetWindowRect(rcViewClientRect);

//Get the dialog screen coordinates
CRect rcDialogWindowRect;
theBasicDlg->GetWindowRect(rcDialogWindowRect);

//**NOTE:  If theBasicDlg is not a POPUP window (most dialogs are)
//**       but is a child window, then change the above lines to:
//**
//**       GetClientRect(rcViewClientRect);
//**       GetWindowRect(rcDialogWindowRect);
//**       ScreenToClient(rcDialogWindowRect);
//**

// Calculate the new position for the dialog
CPoint    NewDlgPos;
NewDlgPos.x = rcViewClientRect.right - rcDialogWindowRect.Width();
NewDlgPos.y = rcViewClientRect.bottom - rcDialogWindowRect.Height();

// Move the dialog into its new position
theBasicDlg.SetWindowPos( NULL, NewDlgPos.x, NewDlgPos.y, 0, 0, SWP_NOSIZE | SWP_NOZORDER | SWP_NOACTIVATE );

theBasicDlg->ShowWindow(SW_SHOWNORMAL);
}

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