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POChanging a dialog's style at creation to override what's in the .RC template
 

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  1. POChanging a dialog's style at creation to override what's in the .RC template
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    <p>I have a little dialog I created using Resource Editor in VS2005. It's going to be used as a child dialog of another dialog, in 2 different ways... either as a child which sits on top of the dialog like a custom control, or as a popup which can move beyond the boundaries of the parent window. If I modify a single style in the RC file, both of these work as expected - simply substitute WS_POPUP for WS_CHILD to toggle:</p> <pre><code>IDD_WIDGET DIALOGEX 0, 0, 221, 78 STYLE DS_SETFONT | DS_3DLOOK | DS_FIXEDSYS | DS_CONTROL | WS_POPUP | WS_BORDER EXSTYLE WS_EX_TOOLWINDOW | WS_EX_STATICEDGE FONT 8, "MS Shell Dlg", 400, 0, 0x1 BEGIN PUSHBUTTON "Pre&amp;view",IDC_ACTION_PREVIEW,64,59,50,15 PUSHBUTTON "M&amp;ore",IDC_ACTION_MORE,115,59,50,15 PUSHBUTTON "S&amp;elect",IDC_ACTION_SELECT,168,59,50,15 END </code></pre> <p>The problem is, I want to be able to choose the behavior when creating the child dialog at run-time as a sort of widget type framework, e.g overriding the RC file style</p> <p>I tried:</p> <pre><code>BOOL CMyDlg::OnInitDialog() { CDialog::OnInitDialog(); m_Widget.Create(IDD_WIDGET,this); DWORD oldstyle = m_Widget.GetStyle(); m_Widget.ModifyStyle(WS_POPUP,WS_CHILD); DWORD newstyle = m_Widget.GetStyle(); } </code></pre> <p>But it makes no difference that I can see, other than that the result of GetStyle changes from <code>0x8400044C</code> to <code>0x4400044C</code>... the widget child-dialog starts invisible but when I show it, it retains the WS_POPUP behavior.</p> <p>What's wrong, and how can it be fixed?</p> <p>As Ben suggests, I wonder if this is not a style that can be changed <em>after</em> the window is created, but the problem then is how to intercept the dialog-template structure and modify the style before it's used to create the window?</p>
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