Solved

Alt Key - & Menu Items

Posted on 2008-10-02
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Last Modified: 2012-05-05
I notice that by default (windows behavior), a menu does not have its menu items (first Character) underlined for the Alt-F hot keys, UNTIL you press the Alt button.

When you move away from your application, to another application, the underlines go away, and when you move back, you have to hit the ALT button again.

Is there a flag, or winAPI call or something that can change this behavior - to keep it on at all times?

Or would i have to explicitly call a ALT Key press in my forms OnActivate  - if so, what is the best code to do this?

Thanks
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Question by:geocoins-software
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Expert Comment

by:rohypnol
ID: 22624424
They shortcuts may not display by default in XP but they still work (Alt+F still opens File if the caption of the menu item is &File). As you probably noticed, to make a key shortcut for a menu item, prefix that character with the & sign, so your menu items should look like: &File, &Edit, &Window, &Save, Save &as...
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Expert Comment

by:ziolko
ID: 22624474
use SystemParametersInfo() with SPI_GETMENUUNDERLINES

ziolko.
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Expert Comment

by:ziolko
ID: 22624522
of course SPI_SETMENUUNDERLINES

ziolko.
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Accepted Solution

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ziolko earned 125 total points
ID: 22624669
this should do the trick:

type
  TBOOL = record
    fBoolean: Boolean;
    FDummy: array[0..2] of Byte;
  end;

procedure TForm1.Button9Click(Sender: TObject);
var setting: TBOOL;
begin
  SystemParametersInfo(SPI_GETMENUUNDERLINES, 0, @setting, 0);
  Memo1.Lines.Add(BoolToStr(setting.fBoolean, True));
  setting.fBoolean := True; //False
  SystemParametersInfo(SPI_SETMENUUNDERLINES, 0, Pointer(setting), 0);
end;

True means that it will be always underlined, False means only when Ctrl key is pressed.

ziolko.
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Author Comment

by:geocoins-software
ID: 22624679
ziolko,  what is the full call

 SystemParametersInfo(SPI_SETMENUUNDERLINES, ?,?,?)

Thanks
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Author Comment

by:geocoins-software
ID: 22624707
Someone (Norrit) on DelphiPages just explained to me:

"This is default windows behaviour...

Right Click the desktop and choose [properties] [appearance] [Effects]
This feature is checked by default, which explains your behaviour..."


however, I will awards the points to first person who shows how to do this via code...

thanks
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Expert Comment

by:ziolko
ID: 22624802
>>however, I will awards the points to first person who shows how to do this via code...
see my last comment, however I've noticed that change takes affect after first press of Ctrl button

ziolko.
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Expert Comment

by:ziolko
ID: 22624810
and if you want make it system wide you have to use SPIF_UPDATEINIFILE or SPIF_SENDCHANGE instead of 0 as last param

ziolko.
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Author Closing Comment

by:geocoins-software
ID: 31502379
THANKS!
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