wxWidgets/include/wx/msw/toplevel.h
Vadim Zeitlin 23ddf26571 Fix bug with wxRadioButton state changing unexpectedly in wxMSW
In wxMSW, a focused wxRadioButton is always checked, which meant that
checking a wxRadioButton while focus was not in the window containing it
and later giving the focus to that window could uncheck it by giving
focus to another wxRadioButton that had had it previously.

Fix this by adding WXSetPendingFocus() to wxMSW wxWindow and calling it
from wxRadioButton::SetValue() to ensure that when the focus is
regained, it goes to the newly checked radio button and not some other
one.

This replaces the previously used, for the same purpose, wxMSW-specific
wxTopLevelWindow::SetLastFocus(), so while this solution is not exactly
pretty, it's not worse than we had before, while being more generic.

Also add a unit test checking that things work correctly in the scenario
described above.

Closes https://github.com/wxWidgets/wxWidgets/pull/1257

Closes #18341.
2019-03-18 18:29:19 +01:00

204 lines
7.8 KiB
C++

///////////////////////////////////////////////////////////////////////////////
// Name: wx/msw/toplevel.h
// Purpose: wxTopLevelWindowMSW is the MSW implementation of wxTLW
// Author: Vadim Zeitlin
// Modified by:
// Created: 20.09.01
// Copyright: (c) 2001 SciTech Software, Inc. (www.scitechsoft.com)
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
#ifndef _WX_MSW_TOPLEVEL_H_
#define _WX_MSW_TOPLEVEL_H_
#include "wx/weakref.h"
// ----------------------------------------------------------------------------
// wxTopLevelWindowMSW
// ----------------------------------------------------------------------------
class WXDLLIMPEXP_CORE wxTopLevelWindowMSW : public wxTopLevelWindowBase
{
public:
// constructors and such
wxTopLevelWindowMSW() { Init(); }
wxTopLevelWindowMSW(wxWindow *parent,
wxWindowID id,
const wxString& title,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxDEFAULT_FRAME_STYLE,
const wxString& name = wxFrameNameStr)
{
Init();
(void)Create(parent, id, title, pos, size, style, name);
}
bool Create(wxWindow *parent,
wxWindowID id,
const wxString& title,
const wxPoint& pos = wxDefaultPosition,
const wxSize& size = wxDefaultSize,
long style = wxDEFAULT_FRAME_STYLE,
const wxString& name = wxFrameNameStr);
virtual ~wxTopLevelWindowMSW();
// implement base class pure virtuals
virtual void SetTitle( const wxString& title) wxOVERRIDE;
virtual wxString GetTitle() const wxOVERRIDE;
virtual void Maximize(bool maximize = true) wxOVERRIDE;
virtual bool IsMaximized() const wxOVERRIDE;
virtual void Iconize(bool iconize = true) wxOVERRIDE;
virtual bool IsIconized() const wxOVERRIDE;
virtual void SetIcons(const wxIconBundle& icons ) wxOVERRIDE;
virtual void Restore() wxOVERRIDE;
virtual void SetLayoutDirection(wxLayoutDirection dir) wxOVERRIDE;
virtual void RequestUserAttention(int flags = wxUSER_ATTENTION_INFO) wxOVERRIDE;
virtual bool Show(bool show = true) wxOVERRIDE;
virtual void Raise() wxOVERRIDE;
virtual void ShowWithoutActivating() wxOVERRIDE;
virtual bool ShowFullScreen(bool show, long style = wxFULLSCREEN_ALL) wxOVERRIDE;
virtual bool IsFullScreen() const wxOVERRIDE { return m_fsIsShowing; }
// wxMSW only: EnableCloseButton(false) may be used to remove the "Close"
// button from the title bar
virtual bool EnableCloseButton(bool enable = true) wxOVERRIDE;
virtual bool EnableMaximizeButton(bool enable = true) wxOVERRIDE;
virtual bool EnableMinimizeButton(bool enable = true) wxOVERRIDE;
// Set window transparency if the platform supports it
virtual bool SetTransparent(wxByte alpha) wxOVERRIDE;
virtual bool CanSetTransparent() wxOVERRIDE;
// MSW-specific methods
// --------------------
// Return the menu representing the "system" menu of the window. You can
// call wxMenu::AppendWhatever() methods on it but removing items from it
// is in general not a good idea.
//
// The pointer returned by this method belongs to the window and will be
// deleted when the window itself is, do not delete it yourself. May return
// NULL if getting the system menu failed.
wxMenu *MSWGetSystemMenu() const;
// Enable or disable the close button of the specified window.
static bool MSWEnableCloseButton(WXHWND hwnd, bool enable = true);
// implementation from now on
// --------------------------
// event handlers
void OnActivate(wxActivateEvent& event);
// called from wxWidgets code itself only when the pending focus, i.e. the
// element which should get focus when this TLW is activated again, changes
virtual void WXDoUpdatePendingFocus(wxWindow* win) wxOVERRIDE
{
m_winLastFocused = win;
}
// translate wxWidgets flags to Windows ones
virtual WXDWORD MSWGetStyle(long flags, WXDWORD *exstyle) const wxOVERRIDE;
// choose the right parent to use with CreateWindow()
virtual WXHWND MSWGetParent() const wxOVERRIDE;
// window proc for the frames
WXLRESULT MSWWindowProc(WXUINT message, WXWPARAM wParam, WXLPARAM lParam) wxOVERRIDE;
// returns true if the platform should explicitly apply a theme border
virtual bool CanApplyThemeBorder() const wxOVERRIDE { return false; }
// This function is only for internal use.
void MSWSetShowCommand(WXUINT showCmd) { m_showCmd = showCmd; }
protected:
// common part of all ctors
void Init();
// create a new frame, return false if it couldn't be created
bool CreateFrame(const wxString& title,
const wxPoint& pos,
const wxSize& size);
// create a new dialog using the given dialog template from resources,
// return false if it couldn't be created
bool CreateDialog(const void *dlgTemplate,
const wxString& title,
const wxPoint& pos,
const wxSize& size);
// Just a wrapper around MSW ShowWindow().
void DoShowWindow(int nShowCmd);
// Return true if the window is iconized at MSW level, ignoring m_showCmd.
bool MSWIsIconized() const;
// override those to return the normal window coordinates even when the
// window is minimized
virtual void DoGetPosition(int *x, int *y) const wxOVERRIDE;
virtual void DoGetSize(int *width, int *height) const wxOVERRIDE;
// Top level windows have different freeze semantics on Windows
virtual void DoFreeze() wxOVERRIDE;
virtual void DoThaw() wxOVERRIDE;
// helper of SetIcons(): calls gets the icon with the size specified by the
// given system metrics (SM_C{X|Y}[SM]ICON) from the bundle and sets it
// using WM_SETICON with the specified wParam (ICOM_SMALL or ICON_BIG);
// returns true if the icon was set
bool DoSelectAndSetIcon(const wxIconBundle& icons, int smX, int smY, int i);
// override wxWindow virtual method to use CW_USEDEFAULT if necessary
virtual void MSWGetCreateWindowCoords(const wxPoint& pos,
const wxSize& size,
int& x, int& y,
int& w, int& h) const wxOVERRIDE;
// This field contains the show command to use when showing the window the
// next time and also indicates whether the window should be considered
// being iconized or maximized (which may be different from whether it's
// actually iconized or maximized at MSW level).
WXUINT m_showCmd;
// Data to save/restore when calling ShowFullScreen
long m_fsStyle; // Passed to ShowFullScreen
wxRect m_fsOldSize;
long m_fsOldWindowStyle;
bool m_fsIsMaximized;
bool m_fsIsShowing;
// Save the current focus to m_winLastFocused if we're not iconized (the
// focus is always NULL when we're iconized).
void DoSaveLastFocus();
// Restore focus to m_winLastFocused if possible and needed.
void DoRestoreLastFocus();
// The last focused child: we remember it when we're deactivated and
// restore focus to it when we're activated (this is done here) or restored
// from iconic state (done by wxFrame).
wxWindowRef m_winLastFocused;
private:
// The system menu: initially NULL but can be set (once) by
// MSWGetSystemMenu(). Owned by this window.
wxMenu *m_menuSystem;
wxDECLARE_EVENT_TABLE();
wxDECLARE_NO_COPY_CLASS(wxTopLevelWindowMSW);
};
#endif // _WX_MSW_TOPLEVEL_H_