Re: Graphical output on Windows XP

["Steve" <nospam_steved94@comcast.net>]

You need to create an event handler to process the keys.

If you look in the source file gwindows-windows.ads there is a procedure 
defined "On_Character_Down_Handler", which is probably what you want.

I don't have an example of using the On_Character_Down_Handler, but I do 
have a similar example for an On_Click_Handler (for a button).

Start out by defining a function to be called when a button is pressed (or 
in your case a character pressed)...

  procedure On_Button_Directory_Click(Window : in out 
GWindows.Base.Base_Window_Type'Class) is
    pragma warnings( off , Window );
    dispName : GString_Unbounded;
    dirPath : GString_Unbounded;
  begin
    Get_Directory( Window, "Open Directory", dispName, dirPath );
  end On_Button_Directory_Click;

...
For my button example, I had to define the button...

  Button_Directory      : Button_Type;

Then create the button and associate the handler with the button

  Create( Button_Directory, Main_Window, "Select Directory", 400, 220, 100, 
20 );
  On_Click_Handler( Button_Directory, On_Button_Directory_Click'Access );

I hope this helps,
Steve
(The Duck)


"Duke Luke" <duke_luke@gmx.de> wrote in message 
news:e499e546.0503300221.154896f1@posting.google.com...
> Hello,
>
> now i have another problem:
>
> i made really nice things with this gnavi-package, but i'm
> not able to get messages from the keyboard (i.e i want to program a
> little tetris game. everything is already working, but i cannot get
> the player's commands from the keyboard while the graphic-window is
> active)
>
> does anyone have suggestions?
> is it possible to do this with the gwindows and gnavi packages or do i 
> have to
> use other packages?
>
> thanks in advance!
>
> greetings,
> Lukas Koenig