My main frame opens on demand a child frame ("SettingsWindow") where the user may change settings. I am using a frame rather than a dialog as this frame has a costly initialization and thus I want to keep re-using it each time the user needs to open it, and from what I've understood so far it seems that using EndModal() would imply that the dialog gets destroyed each time.
I manage opening the settings window from the main frame via Show(), while the window is closed by a settings window's event handler that invokes Hide().
I have noticed that after a wxColourPickerCtrl - child of SettingsWindows - has been opened and subsequently closed, after closing the settings window the main frame goes behind other frames on my desktop (Windows 7) - I have to use the taskbar or click on a visible portion of it to bring it forward again. This does not happen if, for example, I just click a button on the settings window.
Here's a minimal example:
Code: Select all
class TestFrame : public wxFrame
{
public:
TestFrame(wxWindow* parent);
void Open();
private:
void OnCloseButton(wxCloseEvent & event);
wxColourPickerCtrl * mColorPicker;
};
// ----------------------------------------------------------------------------
// main frame
// ----------------------------------------------------------------------------
// frame constructor
MyFrame::MyFrame(const wxString& title)
: wxFrame(
nullptr,
wxID_ANY,
title,
wxDefaultPosition,
wxDefaultSize,
wxDEFAULT_FRAME_STYLE,
_T("Main Frame"))
{
Maximize();
Centre();
// set the frame icon
SetIcon(wxICON(sample));
#if wxUSE_MENUS
// create a menu bar
wxMenu *fileMenu = new wxMenu;
// the "About" item should be in the help menu
wxMenu *helpMenu = new wxMenu;
helpMenu->Append(Minimal_Test, "&Test\tF1", "Run test");
fileMenu->Append(Minimal_Quit, "E&xit\tAlt-X", "Quit this program");
// now append the freshly created menu to the menu bar...
wxMenuBar *menuBar = new wxMenuBar();
menuBar->Append(fileMenu, "&File");
menuBar->Append(helpMenu, "&Help");
// ... and attach this menu bar to the frame
SetMenuBar(menuBar);
#else // !wxUSE_MENUS
// If menus are not available add a button to access the about box
wxSizer* sizer = new wxBoxSizer(wxHORIZONTAL);
wxButton* aboutBtn = new wxButton(this, wxID_ANY, "About...");
aboutBtn->Bind(wxEVT_BUTTON, &MyFrame::OnAbout, this);
sizer->Add(aboutBtn, wxSizerFlags().Center());
#endif // wxUSE_MENUS/!wxUSE_MENUS
#if wxUSE_STATUSBAR
// create a status bar just for fun (by default with 1 pane only)
CreateStatusBar(2);
SetStatusText("Welcome to wxWidgets!");
#endif // wxUSE_STATUSBAR
this->Show(true);
}
// event handlers
void MyFrame::OnQuit(wxCommandEvent& WXUNUSED(event))
{
// true is to force the frame to close
Close(true);
}
void MyFrame::OnTest(wxCommandEvent& WXUNUSED(event))
{
auto frame = new TestFrame(this);
frame->Open();
}
////////////////////////////////////////////////////////////////////////
TestFrame::TestFrame(wxWindow* parent)
{
Create(
parent,
wxID_ANY,
_("Settings"),
wxDefaultPosition,
wxSize(400, 200),
wxCAPTION | wxCLOSE_BOX | wxMINIMIZE_BOX | wxFRAME_FLOAT_ON_PARENT | wxFRAME_NO_TASKBAR,
_T("Settings Window"));
this->Bind(wxEVT_CLOSE_WINDOW, &TestFrame::OnCloseButton, this);
wxBoxSizer * sizer = new wxBoxSizer(wxVERTICAL);
mColorPicker = new wxColourPickerCtrl(this, wxID_ANY, wxColour("WHITE"),
wxDefaultPosition, wxDefaultSize);
mColorPicker->SetToolTip("Sets the single color of the ocean.");
sizer->Add(mColorPicker);
auto button = new wxButton(this, wxID_ANY, "Just a button");
sizer->Add(button);
SetSizerAndFit(sizer);
Centre(wxCENTER_ON_SCREEN | wxBOTH);
}
void TestFrame::Open()
{
this->Raise();
this->Show();
}
void TestFrame::OnCloseButton(wxCloseEvent & /*event*/)
{
this->Hide();
}
What am I doing wrong?
Thank you in advance for your help.
