U++ forum: Welcome to the forum

Search on this site

Search in forums

Home » Community » Newbie corner » Function key to Button

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Function key to Button [message #54349]

Thu, 02 July 2020 05:51

Shwetha
Messages: 39
Registered: August 2011

Member

Hi,

How to assign function key to button which is on the sub layouts

ie, for example in ScatterCtrlDemo we have tabctrls.

In Tab5Dynamic I need to invoke button action start, stop with fn keys..

please guide.

Thank you.

Report message to a moderator

Re: Function key to Button [message #54351 is a reply to message #54349]

Thu, 02 July 2020 22:18

koldo
Messages: 3432
Registered: August 2008

Senior Veteran

Hi Shwetha

You can capture virtual bool Key(), handle the key, and then call the parent window to handle the keys that your function doesn't. For example:

bool BtnTest::Key(dword key, int val) {
    if(key == K_CTRL_S) {
        btnEnter.DoAction();
        return true;
    } else
        return TopWindow::Key(key, val);
}

Best regards
Iñaki

Report message to a moderator

Re: Function key to Button [message #54352 is a reply to message #54351]

Fri, 03 July 2020 06:52

Shwetha
Messages: 39
Registered: August 2011

Member

Hi kuldo,

still not clear.

I get the following error :

cannot call member function 'virtual bool Upp::TopWindow::Key(Upp::dword, int)' without object

bool Tab5_Dynamic::Key(dword key, int val)

{
	LOG("key");
	DUMP("KeyAction");
	
  if(key == K_CTRL_S) {
        bStart.Action();
        return true;
    } else
        return TopWindow::Key(key, val);
}

Attachment: ScatterCtrl_Demo.7z
(Size: 13.00KB, Downloaded 200 times)

Report message to a moderator

Re: Function key to Button [message #54356 is a reply to message #54352]

Fri, 03 July 2020 10:41

Oblivion
Messages: 1202
Registered: August 2007

Senior Contributor

Hello Shwetha,

Quote:

still not clear.

I get the following error :

cannot call member function 'virtual bool Upp::TopWindow::Key(Upp::dword, int)' without object

Koldo has shown the correct generic way: If your derived class is based on TopWindow, it will work. But in your specific example, the button is called froım Tab5_Dynamic class, which is derived from ScatterDemo. So you should call ScatterDemo::Key (or any other base class that derives from Upp::Ctrl, thati s suitable), if you need to further process ScatterDemo keys (you'll probably need that in the future.)

Try this instead:

bool Tab5_Dynamic::Key(dword key, int val)

{
	LOG("key");
	DUMP("KeyAction");
	
  if(key == K_CTRL_S) {
        bStart.Action();
        return true;
    } else
        return ScatterDemo::Key(key, val); 
}

Best regards,
Oblivion

Github page: https://github.com/ismail-yilmaz
upp-components: https://github.com/ismail-yilmaz/upp-components
Bobcat the terminal emulator: https://github.com/ismail-yilmaz/Bobcat

[Updated on: Fri, 03 July 2020 11:50]

Report message to a moderator