+// ----------------------------------------------------------------------------
+// helper functions from wx/msw/private/button.h
+// ----------------------------------------------------------------------------
+
+void wxMSWButton::UpdateMultilineStyle(HWND hwnd, const wxString& label)
+{
+ // update BS_MULTILINE style depending on the new label (resetting it
+ // doesn't seem to do anything very useful but it shouldn't hurt and we do
+ // have to set it whenever the label becomes multi line as otherwise it
+ // wouldn't be shown correctly as we don't use BS_MULTILINE when creating
+ // the control unless it already has new lines in its label)
+ long styleOld = ::GetWindowLong(hwnd, GWL_STYLE),
+ styleNew;
+ if ( label.find(_T('\n')) != wxString::npos )
+ styleNew = styleOld | BS_MULTILINE;
+ else
+ styleNew = styleOld & ~BS_MULTILINE;
+
+ if ( styleNew != styleOld )
+ ::SetWindowLong(hwnd, GWL_STYLE, styleNew);
+}
+
+wxSize wxMSWButton::ComputeBestSize(wxControl *btn)
+{
+ wxClientDC dc(btn);
+
+ wxCoord wBtn,
+ hBtn;
+ dc.GetMultiLineTextExtent(btn->GetLabelText(), &wBtn, &hBtn);
+
+ // FIXME: this is pure guesswork, need to retrieve the real button margins
+ wBtn += 3*btn->GetCharWidth();
+ hBtn = 11*EDIT_HEIGHT_FROM_CHAR_HEIGHT(hBtn)/10;
+
+ // all buttons have at least the standard size unless the user explicitly
+ // wants them to be of smaller size and used wxBU_EXACTFIT style when
+ // creating the button
+ if ( !btn->HasFlag(wxBU_EXACTFIT) )
+ {
+ wxSize sz = wxButton::GetDefaultSize();
+ if ( wBtn < sz.x )
+ wBtn = sz.x;
+ if ( hBtn < sz.y )
+ hBtn = sz.y;
+ }
+
+ wxSize best(wBtn, hBtn);
+ btn->CacheBestSize(best);
+ return best;
+}
+
projects / wxWidgets.git / blobdiff