/////////////////////////////////////////////////////////////////////////////
-// Name: msw/radiobut.cpp
+// Name: src/msw/radiobut.cpp
// Purpose: wxRadioButton
// Author: Julian Smart
// Modified by:
#if wxUSE_RADIOBTN
+#include "wx/radiobut.h"
+
#ifndef WX_PRECOMP
- #include "wx/radiobut.h"
#include "wx/settings.h"
#include "wx/dcscreen.h"
+ #include "wx/toplevel.h"
#endif
#include "wx/msw/private.h"
if ( HasFlag(wxRB_GROUP) )
msStyle |= WS_GROUP;
- /*
- wxRB_SINGLE is a temporary workaround for the following problem: if you
- have 2 radiobuttons in the same group but which are not consecutive in
- the dialog, Windows can enter an infinite loop! The simplest way to
- reproduce it is to create radio button, then a panel and then another
- radio button: then checking the last button hangs the app.
-
- Ideally, we'd detect (and avoid) such situation automatically but for
- now, as I don't know how to do it, just allow the user to create
- BS_RADIOBUTTON buttons for such situations.
- */
- msStyle |= HasFlag(wxRB_SINGLE) ? BS_RADIOBUTTON : BS_AUTORADIOBUTTON;
+ // we use BS_RADIOBUTTON and not BS_AUTORADIOBUTTON because the use of the
+ // latter can easily result in the application entering an infinite loop
+ // inside IsDialogMessage()
+ //
+ // we used to use BS_RADIOBUTTON only for wxRB_SINGLE buttons but there
+ // doesn't seem to be any harm to always use it and it prevents some hangs,
+ // see #9786
+ msStyle |= BS_RADIOBUTTON;
if ( HasFlag(wxCLIP_SIBLINGS) )
msStyle |= WS_CLIPSIBLINGS;
// for compatibility with wxGTK, the first radio button in a group is
// always checked (this makes sense anyhow as you need to ensure that at
- // least one button in the group is checked and this is the simlpest way to
+ // least one button in the group is checked and this is the simplest way to
// do it)
if ( HasFlag(wxRB_GROUP) )
SetValue(true);
void wxRadioButton::SetValue(bool value)
{
- (void)::SendMessage(GetHwnd(), BM_SETCHECK, (value?BST_CHECKED:BST_UNCHECKED), 0L);
+ ::SendMessage(GetHwnd(), BM_SETCHECK,
+ value ? BST_CHECKED : BST_UNCHECKED, 0);
m_isChecked = value;
+ if ( !value )
+ return;
+
// if we set the value of one radio button we also must clear all the other
// buttons in the same group: Windows doesn't do it automatically
- if ( m_isChecked )
+ //
+ // moreover, if another radiobutton in the group currently has the focus,
+ // we have to set it to this radiobutton, else the old radiobutton will be
+ // reselected automatically, if a parent window loses the focus and regains
+ // it.
+ wxWindow * const focus = FindFocus();
+ wxTopLevelWindow * const
+ tlw = wxDynamicCast(wxGetTopLevelParent(this), wxTopLevelWindow);
+ wxCHECK_RET( tlw, _T("radio button outside of TLW?") );
+ wxWindow * const focusInTLW = tlw->GetLastFocus();
+
+ const wxWindowList& siblings = GetParent()->GetChildren();
+ wxWindowList::compatibility_iterator nodeThis = siblings.Find(this);
+ wxCHECK_RET( nodeThis, _T("radio button not a child of its parent?") );
+
+ // this will be set to true in the code below if the focus is in our TLW
+ // and belongs to one of the other buttons in the same group
+ bool shouldSetFocus = false;
+
+ // this will be set to true if the focus is outside of our TLW currently
+ // but the remembered focus of this TLW is one of the other buttons in the
+ // same group
+ bool shouldSetTLWFocus = false;
+
+ // if it's not the first item of the group ...
+ if ( !HasFlag(wxRB_GROUP) )
{
- // If another radiobutton in the group currently has the focus, we have to
- // set it to this radiobutton, else the old readiobutton will be reselected
- // automatically, if a parent window loses the focus and regains it.
- bool shouldSetFocus = false;
- wxWindow* pFocusWnd = FindFocus();
-
- const wxWindowList& siblings = GetParent()->GetChildren();
- wxWindowList::compatibility_iterator nodeThis = siblings.Find(this);
- wxCHECK_RET( nodeThis, _T("radio button not a child of its parent?") );
-
- // if it's not the first item of the group ...
- if ( !HasFlag(wxRB_GROUP) )
+ // ... turn off all radio buttons before it
+ for ( wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious();
+ nodeBefore;
+ nodeBefore = nodeBefore->GetPrevious() )
{
- // ... turn off all radio buttons before it
- for ( wxWindowList::compatibility_iterator nodeBefore = nodeThis->GetPrevious();
- nodeBefore;
- nodeBefore = nodeBefore->GetPrevious() )
+ wxRadioButton *btn = wxDynamicCast(nodeBefore->GetData(),
+ wxRadioButton);
+ if ( !btn )
{
- wxRadioButton *btn = wxDynamicCast(nodeBefore->GetData(),
- wxRadioButton);
- if ( btn && btn->HasFlag(wxRB_SINGLE) )
+ // don't stop on non radio buttons, we could have intermixed
+ // buttons and e.g. static labels
+ continue;
+ }
+
+ if ( btn->HasFlag(wxRB_SINGLE) )
{
// A wxRB_SINGLE button isn't part of this group
break;
}
-
- if (btn)
- {
- if (btn == pFocusWnd)
- shouldSetFocus = true;
- btn->SetValue(false);
+ if ( btn == focus )
+ shouldSetFocus = true;
+ else if ( btn == focusInTLW )
+ shouldSetTLWFocus = true;
- if ( btn->HasFlag(wxRB_GROUP) )
- {
- // even if there are other radio buttons before this one,
- // they're not in the same group with us
- break;
- }
- }
- }
- }
+ btn->SetValue(false);
- // ... and also turn off all buttons after this one
- for ( wxWindowList::compatibility_iterator nodeAfter = nodeThis->GetNext();
- nodeAfter;
- nodeAfter = nodeAfter->GetNext() )
- {
- wxRadioButton *btn = wxDynamicCast(nodeAfter->GetData(),
- wxRadioButton);
-
- if ( btn && (btn->HasFlag(wxRB_GROUP) || btn->HasFlag(wxRB_SINGLE) ) )
+ if ( btn->HasFlag(wxRB_GROUP) )
{
- // no more buttons or the first button of the next group
+ // even if there are other radio buttons before this one,
+ // they're not in the same group with us
break;
}
+ }
+ }
- if (btn)
- {
- if (btn == pFocusWnd)
- shouldSetFocus = true;
+ // ... and also turn off all buttons after this one
+ for ( wxWindowList::compatibility_iterator nodeAfter = nodeThis->GetNext();
+ nodeAfter;
+ nodeAfter = nodeAfter->GetNext() )
+ {
+ wxRadioButton *btn = wxDynamicCast(nodeAfter->GetData(),
+ wxRadioButton);
- btn->SetValue(false);
- }
+ if ( !btn )
+ continue;
+
+ if ( btn->HasFlag(wxRB_GROUP | wxRB_SINGLE) )
+ {
+ // no more buttons or the first button of the next group
+ break;
}
- if (shouldSetFocus)
- SetFocus();
+
+ if ( btn == focus )
+ shouldSetFocus = true;
+ else if ( btn == focusInTLW )
+ shouldSetTLWFocus = true;
+
+ btn->SetValue(false);
}
+
+ if ( shouldSetFocus )
+ SetFocus();
+ else if ( shouldSetTLWFocus )
+ tlw->SetLastFocus(this);
}
bool wxRadioButton::GetValue() const
if ( !m_isChecked )
{
- // we have to do this for BS_RADIOBUTTON anyhow and, strangely enough,
- // sometimes this is needed even for BS_AUTORADIOBUTTON (when we
- // receive focus the button gets BN_CLICKED but stays unchecked!)
+ // we need to manually update the button state as we use BS_RADIOBUTTON
+ // and not BS_AUTORADIOBUTTON
SetValue(true);
wxCommandEvent event(wxEVT_COMMAND_RADIOBUTTON_SELECTED, GetId());
dc.SetFont(wxSystemSettings::GetFont(wxSYS_DEFAULT_GUI_FONT));
s_radioSize = dc.GetCharHeight();
+
+ // radio button bitmap size under CE is bigger than the font height,
+ // adding just one pixel seems to work fine for the default font but it
+ // would be nice to find some better way to find the correct height
+#ifdef __WXWINCE__
+ s_radioSize++;
+#endif // __WXWINCE__
}
wxString str = GetLabel();
int wRadio, hRadio;
if ( !str.empty() )
{
- GetTextExtent(str, &wRadio, &hRadio);
+ GetTextExtent(GetLabelText(str), &wRadio, &hRadio);
wRadio += s_radioSize + GetCharWidth();
if ( hRadio < s_radioSize )
return best;
}
-#endif // wxUSE_RADIOBTN
+WXDWORD wxRadioButton::MSWGetStyle(long style, WXDWORD *exstyle) const
+{
+ WXDWORD styleMSW = wxControl::MSWGetStyle(style, exstyle);
+
+ if ( style & wxRB_GROUP )
+ styleMSW |= WS_GROUP;
+ return styleMSW;
+}
+
+#endif // wxUSE_RADIOBTN
projects / wxWidgets.git / blobdiff