+ wxPanel *panel = wxDynamicCast(GetParent(), wxPanel);
+ if ( panel )
+ {
+ if ( panel->GetDefaultItem() == this )
+ {
+ // don't leave the panel with invalid default item
+ panel->SetDefaultItem(NULL);
+ }
+ }
+}
+
+// ----------------------------------------------------------------------------
+// size management including autosizing
+// ----------------------------------------------------------------------------
+
+wxSize wxButton::DoGetBestSize() const
+{
+ wxString label = wxGetWindowText(GetHWND());
+ int wBtn;
+ GetTextExtent(label, &wBtn, NULL);
+
+ int wChar, hChar;
+ wxGetCharSize(GetHWND(), &wChar, &hChar, (wxFont*)&GetFont());
+
+ // add a margin - the button is wider than just its label
+ wBtn += 3*wChar;
+
+ // the button height is proportional to the height of the font used
+ int hBtn = 0;// TODO: BUTTON_HEIGHT_FROM_CHAR_HEIGHT(hChar);
+
+ return wxSize(wBtn, hBtn);
+}
+
+/* static */
+wxSize wxButton::GetDefaultSize()
+{
+ static wxSize s_sizeBtn;
+
+ if ( s_sizeBtn.x == 0 )
+ {
+ wxScreenDC dc;
+ dc.SetFont(wxSystemSettings::GetSystemFont(wxSYS_DEFAULT_GUI_FONT));
+
+ // the size of a standard button in the dialog units is 50x14,
+ // translate this to pixels
+ // NB1: the multipliers come from the Windows convention
+ // NB2: the extra +1/+2 were needed to get the size be the same as the
+ // size of the buttons in the standard dialog - I don't know how
+ // this happens, but on my system this size is 75x23 in pixels and
+ // 23*8 isn't even divisible by 14... Would be nice to understand
+ // why these constants are needed though!
+ s_sizeBtn.x = (50 * (dc.GetCharWidth() + 1))/4;
+ s_sizeBtn.y = ((14 * dc.GetCharHeight()) + 2)/8;
+ }
+
+ return s_sizeBtn;
+}
+
+void wxButton::Command (wxCommandEvent & event)
+{
+ ProcessCommand (event);
+}
+
+// ----------------------------------------------------------------------------
+// helpers
+// ----------------------------------------------------------------------------
+
+bool wxButton::SendClickEvent()
+{
+ wxCommandEvent event(wxEVT_COMMAND_BUTTON_CLICKED, GetId());
+ event.SetEventObject(this);
+
+ return ProcessCommand(event);