如何获取资源文件中对话框的按钮控件的大小和位置？

Question

I am trying to programmatically design a dialog menu that resizes based on the resolution of the screen, and I am able to get the size and positions of the dialog using the dialog's nameID following this question:

Get Dialog Size as defined in resource file

However, I'm having trouble trying to obtain the size and positions of the button controls within the dialog. Here's an example of what the dialog might look like in the resource file:

IDD_DLG DIALOG  0, 0, 300, 200
STYLE DS_SETFONT | DS_MODALFRAME | WS_POPUP
BEGIN
    DEFPUSHBUTTON   "OK",IDOK,30,46,42,18
    PUSHBUTTON      "Cancel",IDCANCEL,145,46,42,18
END

I can obtain the dialog's size and positions using its nameID , ie IDD_DLG , but is it possible to obtain the same thing for the DEFPUSHBUTTON or PUSHBUTTON programmatically?

If so, how? Thanks!

Answer 1

MFC allows automatic repositioning/resizing of child buttons. In resource property page, click on dialog button, go to dynamic control section, enable dynamic resizing/move for each button.

To find the coordinates of the button, relative to top-left of dialog client window:

Use GetWindowRect to find the buttons rectangle in screen coordinates. Then convert the screen coordinates to client coordinates:

CMyDialog::OnInitDialog()
{
    CDialog::OnInitDialog();
    CRect rc;
    CWnd *wnd = GetDlgItem(IDOK);
    wnd->GetWindowRect(&rc);
    ScreenToClient(rc);
    ...
    //move/resize rc
    wnd->SetWindowPos(NULL, rc.left, rc.top, rc.Width(), rc.Height(), SWP_SHOWWINDOW);
}