- SetName(name);
- SetValidator(validator);
-
- parent->AddChild((wxButton *)this);
- m_backgroundColour = parent->GetDefaultBackgroundColour() ;
- m_foregroundColour = parent->GetDefaultForegroundColour() ;
-
- m_windowStyle = (long&)style;
-
- int x = pos.x;
- int y = pos.y;
- int width = size.x;
- int height = size.y;
-
- if (id == -1)
- m_windowId = NewControlId();
- else
- m_windowId = id;
-
- DWORD exStyle = MakeExtendedStyle(m_windowStyle);
- HWND wx_button =
- CreateWindowEx(exStyle, "BUTTON", label, BS_PUSHBUTTON | WS_TABSTOP | WS_CHILD,
- 0, 0, 0, 0, (HWND) parent->GetHWND(), (HMENU)m_windowId,
- wxGetInstance(), NULL);
-
-#if CTL3D
-// if (!(GetParent()->GetWindowStyleFlag() & wxUSER_COLOURS))
-// Ctl3dSubclassCtl(wx_button);
-#endif
+ static wxSize s_sizeBtn;
+
+ if ( s_sizeBtn.x == 0 )
+ {
+ wxScreenDC dc;
+ dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
+
+ // The size of a standard button in the dialog units is 50x14,
+ // translate this to pixels.
+ //
+ // Windows' computes dialog units using average character width over
+ // upper- and lower-case ASCII alphabet and not using the average
+ // character width metadata stored in the font; see
+ // http://support.microsoft.com/default.aspx/kb/145994 for detailed
+ // discussion.
+ //
+ // NB: wxMulDivInt32() is used, because it correctly rounds the result
+
+ const wxSize base = wxPrivate::GetAverageASCIILetterSize(dc);
+ s_sizeBtn.x = wxMulDivInt32(50, base.x, 4);
+ s_sizeBtn.y = wxMulDivInt32(14, base.y, 8);
+ }
+
+ return s_sizeBtn;
+}
+
+// ----------------------------------------------------------------------------
+// default button handling
+// ----------------------------------------------------------------------------
+
+/*
+ The comment below and all this code is probably due to not using WM_NEXTDLGCTL
+ message when changing focus (but just SetFocus() which is not enough), see
+ http://blogs.msdn.com/oldnewthing/archive/2004/08/02/205624.aspx for the
+ full explanation.
+
+ TODO: Do use WM_NEXTDLGCTL and get rid of all this code.
+
+
+ "Everything you ever wanted to know about the default buttons" or "Why do we
+ have to do all this?"
+
+ In MSW the default button should be activated when the user presses Enter
+ and the current control doesn't process Enter itself somehow. This is
+ handled by ::DefWindowProc() (or maybe ::DefDialogProc()) using DM_SETDEFID
+ Another aspect of "defaultness" is that the default button has different
+ appearance: this is due to BS_DEFPUSHBUTTON style which is completely
+ separate from DM_SETDEFID stuff (!). Also note that BS_DEFPUSHBUTTON should
+ be unset if our parent window is not active so it should be unset whenever
+ we lose activation and set back when we regain it.
+
+ Final complication is that when a button is active, it should be the default
+ one, i.e. pressing Enter on a button always activates it and not another
+ one.
+
+ We handle this by maintaining a permanent and a temporary default items in
+ wxControlContainer (both may be NULL). When a button becomes the current
+ control (i.e. gets focus) it sets itself as the temporary default which
+ ensures that it has the right appearance and that Enter will be redirected
+ to it. When the button loses focus, it unsets the temporary default and so
+ the default item will be the permanent default -- that is the default button
+ if any had been set or none otherwise, which is just what we want.
+
+ NB: all this is quite complicated by now and the worst is that normally
+ it shouldn't be necessary at all as for the normal Windows programs
+ DefWindowProc() and IsDialogMessage() take care of all this
+ automatically -- however in wxWidgets programs this doesn't work for
+ nested hierarchies (i.e. a notebook inside a notebook) for unknown
+ reason and so we have to reproduce all this code ourselves. It would be
+ very nice if we could avoid doing it.
+ */
+
+// set this button as the (permanently) default one in its panel
+wxWindow *wxButton::SetDefault()
+{
+ // set this one as the default button both for wxWidgets ...
+ wxWindow *winOldDefault = wxButtonBase::SetDefault();
+
+ // ... and Windows
+ SetDefaultStyle(wxDynamicCast(winOldDefault, wxButton), false);
+ SetDefaultStyle(this, true);
+
+ return winOldDefault;
+}
projects / wxWidgets.git / blobdiff