creating virtual qwerty keypad

sridhar6994 · Nov 22nd 2019, 11:57am

Hi
I have checked in GUI builder,there i don't see any virtual keypad like that.
In my application I need to add virtual keyboard for entering data.
Right now I have managed to get TEXTS,IMAGESetc in my code using GUI
Builder.

How can I add virtual keyboard using emwin?
please suggest me some answers.

Thanks
R Sridhar

volodymyr · Nov 22nd 2019, 12:16pm

Hello.

Yes, you can create virtual keypad.
It can be a window with set of buttons on it, and every button by clicking on it should send correspondent key using function GUI_StoreKeyMsg() or GUI_SendKeyMsg().
I suppose there is no ready-to-use virtual keypad, you have to write this.

My own experience:
1. It is better if every button on the virtual keypad will be unfocusable, use for this purpose the function BUTTON_SetFocussable(hButton, 0).
2. In emWin 5.50 there is a new function WM_SetUntouchable(), you can use it to disable PID-reaction of all bottom lying windows except your current window which gets keys and your current virtual keypad.

sridhar6994 · Nov 22nd 2019, 12:57pm

HI Volodymyr,
Thanks for your fast response.
I will check what you said and post my results.

Thanks
R Sridhar

SEGGER - Florian · Nov 22nd 2019, 1:02pm

Hi Sridhar,

currently emWin doesn't offer a virtual keypad, but I've attached a ready-to-use keyboard with a small sample showing how to use it.

When clicking on the EDIT widget in the sample, the keyboard is opened. Alternatively, the keyboard is opened via the button in the bottom right corner of the screen.

Best regards,

Florian

sridhar6994 · Nov 22nd 2019, 1:06pm

Hi Florian,
Thanks again for your reply.
I consider your code as reference and try to get output.
Thanks
R sridhar

volodymyr · Nov 22nd 2019, 9:42pm

sridhar6994 wrote:

HI Volodymyr,
Thanks for your fast response.
I will check what you said and post my results.

Thanks
R Sridhar

You can get my sample code of virt. keyboard from this thread:
forum.segger.com/index.php/Thr…-new-function-from-v-5-50

sridhar6994 · Nov 25th 2019, 1:22pm

SEGGER - Florian wrote:

Hi Sridhar,

currently emWin doesn't offer a virtual keypad, but I've attached a ready-to-use keyboard with a small sample showing how to use it.

When clicking on the EDIT widget in the sample, the keyboard is opened. Alternatively, the keyboard is opened via the button in the bottom right corner of the screen.

Best regards,

Florian

HI Florian
Thanks for the sample code.I have used your code as reference and made a GUI keyboard with numbers and alphabets,
But I want to know whether it has edit text on this code?

Thanks
R Sridhar

SEGGER - Schoenen · Nov 27th 2019, 4:51pm

Hi,

not sure what you mean by "has edit text on this code?".

The example includes an EDIT widget which gets the the text of the pressed buttons. Before it can receive the input it needs the focus, just click on it.

Regards,
Sven

sridhar6994 · Nov 28th 2019, 1:24pm

Thanks everyone
I have managed to create keypad and numpad using your suggestions.
But I don't know why in keypad I cant able to change the default position of
the cursor.Please share your thoughts for this problem.

volodymyr · Nov 28th 2019, 3:11pm

sridhar6994 wrote:

why in keypad I cant able to change the default position of the cursor

What do you mean "change the default position of the cursor"?

What kind of cursor?
Cursor of keypad? It should not have any cursor. It contains only buttons.

If you mean the cursor of editable widget (EDIT or MULTIEDIT) so you should think in such manner, that you don't have a screen keypad, but only hardware keyboard.
What you will do in this way, exactly you should do if you have screen keypad - it should send key codes only via function GUI_SendKeyMsg().
And any other widgets or windows should think that they receive these key codes from hardware keyboard.

If you need the actions to move cursor to the left or to the right you should put two buttons to the keypad which will send the key codes GUI_KEY_LEFT and GUI_KEY_RIGHT.

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