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Re: Just one instance of application running (SingleApp) [message #24634 is a reply to message #24627]

Tue, 26 January 2010 05:41

Sc0rch
Messages: 99
Registered: February 2008
Location: Russia, Rubtsovsk

Member

You said:

koldo wrote on Tue, 26 January 2010 03:52

Hello Sc0rch

GetWindowIdFromCaption(name, true) tries to find a window with title == name.

GetWindowIdFromCaption(name, false) will get the window handle of the window with a title that just contains name.

If it does not work could you give me more details ?.

Best regards
Koldo

I've tested both variants, works well for direct use, like:

TopWindow wnd;
wnd.Title("Test");
wnd.Open();

DUMP(GetWindowIdFromCaption("Test"));

But, not working in this code:

#include <CtrlLib/CtrlLib.h>
#include <SysInfo/SysInfo.h>
using namespace Upp;

class UniqueWindow : public TopWindow
{
public:
	UniqueWindow() {}
};

inline bool CreateSingleApp(const String& unique, const String& message)
{
	if (GetWindowIdFromCaption(unique, false) >= 0)
	{
		if (!message.IsEmpty())
			Exclamation(message);
		return false;
	}

	Single<UniqueWindow>().Title(unique).SetRect(-1, -1, 1, 1);
	Single<UniqueWindow>().Hide();
	Single<UniqueWindow>().Open();
	return true;
}

GUI_APP_MAIN
{
	if (!CreateSingleApp("SingleApp Test##SingleApp##1.0", "Another instance of application "
		"already exists!"))
	{
		return;
	}

	TopWindow wnd;
	wnd.SetRect(Size(200, 100));
	wnd.Run();
}

Test, and say, please, maybe it not works only for me.

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