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on-screen keyboard

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Join Date: Jan 2006

Posts: 16

Reputation: Katrix36 is an unknown quantity at this point

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Katrix36

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on-screen keyboard

Jan 7th, 2006

Hey,

I'm trying to create a on-screen keyboard for a group of disabled students at a school. So far i've managed to create the program to type out each letter/number that the user clicks on. This is fine, but I have to state the name of the active window that the text/numbers get printed.

Would anyone know how I could send a keystroke from my program to a program like Microsoft Word, Internet Explorer, Microsoft Publisher etc?

I know Microsoft Windows XP has one built in, but the keys/letters are too small for the students to press because of there conditionss. So could someone please help me.

Katrix36

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Join Date: Oct 2005

Posts: 44

Reputation: Ooble is an unknown quantity at this point

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Ooble

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Re: on-screen keyboard

Jan 7th, 2006

Check out the SendKeys function - it's part of the Win32 API.

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 Pascal and Delphi Syntax (Toggle Plain Text) 
while(sleeping)
    cat_wails();
wake_up();
for(i=0;i<9;i++)
    shoot_cat();
rejoice();
goto(bed);
while(sleeping)
    cat_wails();
wake_up();
for(i=0;i<9;i++)
    shoot_cat();
rejoice();
goto(bed);

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Join Date: Jan 2006

Posts: 16

Reputation: Katrix36 is an unknown quantity at this point

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Katrix36

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Re: on-screen keyboard

Jan 8th, 2006

Thank you for the code, but I have already tryed that. I'm wanting to on-screen keyboard to send a keystroke to a non-active window, just like the one built into windows xp.

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Join Date: Oct 2005

Posts: 44

Reputation: Ooble is an unknown quantity at this point

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Ooble

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Re: on-screen keyboard

Jan 8th, 2006

The SendKeys function sounds to be what you want. You'll need to get the handle of the last window to be focused, and send the keys directly to it. Unfortunately, I haven't done any Win32 programming in a while, so I'm not quite sure how you would go about it... hopefully someone with more than half a brain will come along and pull me out of this hole.

 Help with Code Tags 
 Pascal and Delphi Syntax (Toggle Plain Text) 
while(sleeping)
    cat_wails();
wake_up();
for(i=0;i<9;i++)
    shoot_cat();
rejoice();
goto(bed);
while(sleeping)
    cat_wails();
wake_up();
for(i=0;i<9;i++)
    shoot_cat();
rejoice();
goto(bed);

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Join Date: Nov 2004

Posts: 6,143

Reputation: jwenting is just really nice

Solved Threads: 213

jwenting

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duckman

Re: on-screen keyboard

Jan 9th, 2006

Only the window that has keyboard focus can receive keyboard events AFAIK.
You'll have to instead create some interface that will allow the virtual keyboard to send data to your application forms and fill them that way, working outside the Windows message dispatcher system.

Maybe it's changed though, I've not done any Win32 API programming in quite a while.

As people are clearly allowed to attack me but I'm not allowed to defend myself, I no longer post to this site.