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How to remove the button [X] that closes the window? [message #444]

Mon, 02 January 2006 19:42

id9848949
Messages: 2
Registered: December 2005

Junior Member

i can't find any Closeable()...close button in caption does not look nice in login dialog..

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Re: how to display dialog box without close button in window caption? [message #445 is a reply to message #444]

Mon, 02 January 2006 20:26

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

Unfortunately, is does not seem possible to avoid close button in Win32 API...

Mirek

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Re: how to display dialog box without close button in window caption? [message #446 is a reply to message #445]

Mon, 02 January 2006 21:31

id9848949
Messages: 2
Registered: December 2005

Junior Member

it looks like that mfc window without WS_SYSMENU doesn't have any buttons, i verified it with simple example; i have checked TopWindow::SyncCaption (TopWin32.cpp) function and i don't understand why TopWindow window has close button but doesn't have any system menu

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Re: how to display dialog box without close button in window caption? [message #447 is a reply to message #446]

Mon, 02 January 2006 22:37

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

Last time I checked I found Win32 behaviour quite fuzzy. I will try to experiment with this a bit ASAP.

Would you find any solution, I would be happy to add it to TopWindow....

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Re: how to display dialog box without close button in window caption? [message #456 is a reply to message #444]

Wed, 04 January 2006 07:49

gprentice
Messages: 260
Registered: November 2005
Location: New Zealand

Experienced Member

I suspect with WS_CAPTION there will always be a close button (and title bar) but you can grey the close button with some effort. Title bar is useful for being able to move the window around, even a login window. CreateWindowEx seems to need WS_SYSMENU to get system menu, depending on other settings.

You can find out what's on the title bar but apparently you can't change it using TITLEBARINFO.
http://msdn.microsoft.com/library/en-us/winui/winui/windowsu serinterface/windowing/windows/windowreference/windowfunctio ns/gettitlebarinfo.asp

Graeme

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Re: how to display dialog box without close button in window caption? [message #458 is a reply to message #456]

Wed, 04 January 2006 08:18

gprentice
Messages: 260
Registered: November 2005
Location: New Zealand

Experienced Member

I'm wrong. It is possible to get rid of the close button and still have title bar.

Here's how to do it in VB. I'm sure it's possible in C++ too Smile

http://www.devx.com/tips/Tip/14284

In C++ (info found on usenet)

Disable the close button

EnableMenuItem( GetSystemMenu( hWnd, 0 ), SC_CLOSE, MF_BYCOMMAND
|MF_DISABLED );

Remove the close button (I think).

HMENU hMenu = GetSystemMenu( hWnd, 0 );
int nNbItems = GetMenuItemCount(hMenu);
RemoveMenu(hMenu, nNbItems - 1, MF_BYPOSITION);
RemoveMenu(hMenu, nNbItems - 2, MF_BYPOSITION);

And handle WM_SYSCOMMAND (SC_CLOSE) if you want also to disable [Alt]+[F4]

Graeme

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How to remove the button [X] that close the window [message #2845 is a reply to message #444]

Fri, 28 April 2006 00:20

forlano
Messages: 1215
Registered: March 2006
Location: Italy

Senior Contributor

Hello,

I do not want my user close the window by pressing the button [X] in the top-right side of the window itself. To prevent it I've attached to the event WhenClose a callback that do nothing. It seems to work although I do not know if it is the correct way.
However I would like to let the button [X] disappear from the bar to prevent useless click. Is it possible?
Thank you

Luigi

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Re: How to remove the button [X] that close the window [message #2848 is a reply to message #2845]

Fri, 28 April 2006 00:42

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

Unfotunately, not really (AFAIK). That close button is there places by windows and there is a little that can be done with that.

You can work that around using popup windows, but them you have to implement all the window functionality (like caption, resizing etc) on your own, also this is impossible on Linux where popups have quite specific behaviour.

Mirek

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Re: How to remove the button [X] that close the window [message #2850 is a reply to message #2848]

Fri, 28 April 2006 00:57

forlano
Messages: 1215
Registered: March 2006
Location: Italy

Senior Contributor

luzr wrote on Fri, 28 April 2006 00:42

Unfotunately, not really (AFAIK). That close button is there places by windows and there is a little that can be done with that.

Mirek

OK, I'll live with it. Please let me ask the last question.
At least is there the possibility to disable it, so that it looks a bit darker suggesting that is useless to click it?

Luigi

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Re: How to remove the button [X] that close the window [message #2852 is a reply to message #2850]

Fri, 28 April 2006 09:18

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

It is not directly supported by U++ (platform differences..), but google reveals that it perhaps is possible, but tricky:

http://addressof.com/blog/articles/232.aspx

Mirek

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Re: How to remove the button [X] that close the window [message #2853 is a reply to message #2852]

Fri, 28 April 2006 10:25

gprentice
Messages: 260
Registered: November 2005
Location: New Zealand

Experienced Member

See this post.

(Edit by fudadmin: url removed, topics merged.)

Disable the close button

EnableMenuItem( GetSystemMenu( hWnd, 0 ), SC_CLOSE, MF_BYCOMMAND
|MF_DISABLED );

Remove the close button (I think).

HMENU hMenu = GetSystemMenu( hWnd, 0 );
int nNbItems = GetMenuItemCount(hMenu);
RemoveMenu(hMenu, nNbItems - 1, MF_BYPOSITION);
RemoveMenu(hMenu, nNbItems - 2, MF_BYPOSITION);

And handle WM_SYSCOMMAND (SC_CLOSE) if you want also to disable [Alt]+[F4]

[Updated on: Fri, 28 April 2006 10:52] by Moderator

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Re: How to remove the button [X] that closes the window [message #2855 is a reply to message #2853]

Fri, 28 April 2006 10:39

fudadmin
Messages: 1321
Registered: November 2005
Location: Kaunas, Lithuania

Ultimate Contributor
Administrator

I will merge those 2 topics because they are identical...
Edit: Done.

[Updated on: Fri, 28 April 2006 10:54]

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Re: How to remove the button [X] that close the window [message #9873 is a reply to message #2848]

Tue, 05 June 2007 14:57

jlfranks
Messages: 57
Registered: May 2007
Location: Houston, TX, USA

Member

I have the same problem -- don't want the user to see or access
the X button upper right of window in the title bar.

However, I'm using Linux. Is there any resolution to this, i.e., hide the button so user has no access to it?

--jlf

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Re: How to remove the button [X] that closes the window? [message #18441 is a reply to message #444]

Wed, 01 October 2008 05:28

sevenjay
Messages: 30
Registered: October 2008
Location: Taiwan

Member

It can be used like this

class example : public WithexampleLayout<TopWindow> {
public:
	ex();
	void Close();
};

void example::Close()
{
	PromptOK("Please Login");
}

and the application can not be closed.

But, more one question is how to close it? Confused

Use

    delete this;

is the method safe?

[Updated on: Wed, 01 October 2008 06:50]

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Re: How to remove the button [X] that closes the window? [message #18442 is a reply to message #18441]

Wed, 01 October 2008 09:26

bytefield
Messages: 210
Registered: December 2007

Experienced Member

HI, Have a look at Break and Breaker functions. These should get you out from main loop.

cdabbd745f1234c2751ee1f932d1dd75

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Re: How to remove the button [X] that closes the window? [message #18480 is a reply to message #18441]

Fri, 03 October 2008 04:33

sevenjay
Messages: 30
Registered: October 2008
Location: Taiwan

Member

I think this is clear Smile

class example : public WithexampleLayout<TopWindow> {
public:
	example();
	void Close();
	void RealClose();
};

void example::Close()
{
	PromptOK("Please Login");
}
void example::RealClose()
{
	if(PromptOKCancel("Exit MyApp?"))
		this->TopWindow::Close();
}

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Re: how to display dialog box without close button in window caption? [message #54366 is a reply to message #458]

Tue, 07 July 2020 09:05

jstip
Messages: 4
Registered: July 2020

Junior Member

Indeed it's possible, similar as in VBA:

#include <Winuser.h>

HMENU hMenu = GetSystemMenu(GetHWND(),0);
RemoveMenu(hMenu, SC_CLOSE, MF_BYCOMMAND);

I've placed it in the GotFocus callback.

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Re: how to display dialog box without close button in window caption? [message #54472 is a reply to message #54366]

Tue, 28 July 2020 17:54

mirek
Messages: 14271
Registered: November 2005

Ultimate Member

That works, but only in Win32....

Mirek

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