Class to Auto-Position Controls on Window Resize

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Introduction

Have you ever wanted to resize a window but NOT have to deal with all
of that annoying control-repositioning? What a hassle! Here is an easy-to-use class
that should provide a good foundation for anyone wishing to easily reposition controls
when a user resizes the parent window.

Usage

In order to use this class, simply follow these steps:

1. Create a CControlPos member variable in your CDialog (used in example) or CView derived class.

class CYourDialog : public CDialog
{
...
 CControlPos m_cControlPos;

2. In the OnInitDialog (or InitialUpdate) function, set the object’s parent window

BOOL CYourDialog::OnInitDialog()
...
 m_cControlPos.SetParent(this);
...

3. After the call to CControlPos::SetParent, Add the controls you want to resize.

m_cControlPos.AddControl(IDOK, CP_MOVE_HORIZONTAL);
m_cControlPos.AddControl(IDCANCEL, CP_MOVE_HORIZONTAL);

4. Finally, on your WM_SIZE handler, call the object’s MoveControls to specify runtime behaviour. move all of the controls. Controls can be moved
   horizontally and vertically and resized horizontally and vertically.

void CYourDialog::OnSize(UINT nType, int cx, int cy)
{
 CDialog::OnSize(nType, cx, cy);

 m_cControlPos.MoveControls();
}

Downloads

Download source – 4 Kb
Download demo project – 17 Kb