C / C++ / MFC

"The greatest good you can do for another is not just to share your riches but to reveal to him his own." - Benjamin Disraeli

struct OffsetInfo
{
     OffsetInfo(HWND hWnd, int OffsetX, int OffsetY):
      m_hDialog(hDialog), m_OffsetX(OffsetX), m_OffsetY(OffsetY)
     {}

     HWND m_hDialog;
     int m_OffsetX;
     int m_OffsetY;
};
 
BOOL CALLBACK EnumChildProc(HWND hwnd, LPARAM lParam)
{
     // Get access to data.
     OffsetInfo* pInfo = reinterpret_cast<OffsetInfo*>(lParam);
 
     // Get the position of the child.
     RECT rc;
     GetWindowRect(hwnd, &rc); // We're assuming success here.
     POINT pt = {rc.left, rc.top};
     ScreenToClient(pInfo->m_hDialog, &pt); // We're assuming success here.
  
     // Offset the child position.
     pt.x += pInfo->m_OffsetX;
     pt.y += pInfo->m_OffsetY;
 
     // Move the child.
     SetWindowPos(hwnd, NULL, pt.x, pt.y, 0, 0, SWP_NOZORDER|SWP_NOSIZE);
 
     return TRUE; // Continue enumeration.
}
 
void CYourDialog::DoIt()
{
     // Before the dialog is expanded.
     CRect rcBefore;
     GetClientRect(&rcBefore);
 
     // Expand the dialog here......
 
     CRect rcAfter;
     GetClientRect(&rcAfter);
  
     // Now we move the children.
     OffsetInfo oi(m_hWnd, (rcAfter.Width()-rcBefore.Width())/2, (rcAfter.Height()-rcBefore.Height())/2);
     EnumChildWindows(m_hWnd, &EnumChildProc, reinterpret_cast<LPARAM>(&oi));
}

masnu wrote:

What is the best way to accomplish this?

"The words of God are not like the oak leaf which dies and falls to the earth, but like the pine tree which stays green forever." - Native American Proverb