Activate MDI window

[mesajflaviu]

How can I activate a MDI window after this one has been hidden in systemtray ?

I have tried:

ShowWindow(SW_RESTORE);
SetForegroundWindow();

is shown, but not activated. I have to click on this window in order to be activated...
also, I have tried:

ShowWindow(SW_RESTORE);
SetForegroundWindow();
BringWindowToTop();
SetFocus();
ShowWindow(SW_SHOW);
ActivateFrame(SW_SHOW);

the same result ... How can I activate this MDI window after has been shown ?

[VictorN]

Where do you call this code from?

[Arjay]

Along the lines of what Victor is asking... Are you calling this from the same process the mdi window is in or from a separate process?

[mesajflaviu]

Where do you call this code from?

I call these methods in the CMainFrame code:

void CMainFrame::On0Restore() 
{
	// TODO: Add your command handler code here

	ShowWindow(SW_RESTORE);
	SetForegroundWindow();
//	::BringWindowToTop(GetSafeHwnd());
//	::SetFocus(GetSafeHwnd());
//	::SetForegroundWindow(GetSafeHwnd());
//	::ShowWindow(GetSafeHwnd(), SW_SHOW);
}

[mesajflaviu]

Along the lines of what Victor is asking... Are you calling this from the same process the mdi window is in or from a separate process?

I am call these methods from the same process, from the same thread.

[VictorN]

I call these methods in the CMainFrame code:

void CMainFrame::On0Restore() 
{
	// TODO: Add your command handler code here

	ShowWindow(SW_RESTORE);
	SetForegroundWindow();
//	::BringWindowToTop(GetSafeHwnd());
//	::SetFocus(GetSafeHwnd());
//	::SetForegroundWindow(GetSafeHwnd());
//	::ShowWindow(GetSafeHwnd(), SW_SHOW);
}

Did you debug this code? Is this method called?

[mesajflaviu]

Of course that I've debugged. The only way to get the real focus is to call MessageBox (or a modal dialog) after I bring the MDI window to foreground. But this is not what I want. I only need to get the main frame of my app to foreground and set up as focused, ready to get another user commands.

[VictorN]

OK! What message do you handle calling this

void CMainFrame::On0Restore()

Could you post a small project reproducing this behavior?

[mesajflaviu]

OK! What message do you handle calling this

void CMainFrame::On0Restore()

Could you post a small project reproducing this behavior?

Is coming from a system tray icon right click menu item.

[VictorN]

Is coming from a system tray icon right click menu item.

Again:

Could you post a small project reproducing this behavior?

[VictorN]

I ask you for a small test project just because I have no time to create my own one and then try to guess how to simulate your problem!

[mesajflaviu]

I ask you for a small test project just because I have no time to create my own one and then try to guess how to simulate your problem!

Ok, I'll try to create a small project for this. I don't know if I could built today. But I come back. Seem very strange this issue because the called methods seem reliable and clear.

[mesajflaviu]

Along the lines of what Victor is asking... Are you calling this from the same process the mdi window is in or from a separate process?

In fact, the app has single instance pattern. So, the issue occur when app is already started, and when user try to start another instance and a system tray balloon is shown, and user click on this volume, and then is fired code from the first post. And didn't work ok, instead of MDI get focus, I saw the app flash the task bar icon few times. So, I have tried this code too:

	ShowWindow(SW_RESTORE);

	HWND hForegdWnd = ::GetForegroundWindow();
	DWORD dwCurID = ::GetCurrentThreadId();
	DWORD dwForeID = ::GetWindowThreadProcessId(hForegdWnd, NULL);

	::AttachThreadInput(dwCurID, dwForeID, TRUE);
	::SetForegroundWindow(m_hWnd);
	::SetFocus(m_hWnd);
	::AttachThreadInput(dwCurID, dwForeID, FALSE);

with the same result.

[VictorN]

still waiting for the test project.

[Arjay]

In fact, the app has single instance pattern. So, the issue occur when app is already started, and when user try to start another instance and a system tray balloon is shown, and user click on this volume, and then is fired code from the first post. And didn't work ok, instead of MDI get focus, I saw the app flash the task bar icon few times. So, I have tried this code too:

	ShowWindow(SW_RESTORE);

	HWND hForegdWnd = ::GetForegroundWindow();
	DWORD dwCurID = ::GetCurrentThreadId();
	DWORD dwForeID = ::GetWindowThreadProcessId(hForegdWnd, NULL);

	::AttachThreadInput(dwCurID, dwForeID, TRUE);
	::SetForegroundWindow(m_hWnd);
	::SetFocus(m_hWnd);
	::AttachThreadInput(dwCurID, dwForeID, FALSE);

with the same result.

So what started out as a post wondering why focus can't be set on an MDI application has now turned into a single instance tray notify application?

Clearly it's a bit more complex. That being the case, Victor's ask of a sample app that repros the behavior is probably your best chance of receiving help.