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Phil · Guest

Greetings to all ...

I am tempted to use the F10 (function key) in my Delphi apps, however,
I have read somewhere (I cannot remember where) that it is * NOT*
recommended using the F10 key.

Could someone please refresh my memory as to why you should
not use this key . ANy details would be greatly appreciated!

-
Phil Tusa

Christophe Geers · Guest

Phil,

F10, like for example the F1 key have a "standard" meaning in Windows
applications and really shouldn't be used for any other purpose. (But
ofcourse customers often view things otherwhise.)

Normally the F10 key is used to toggle the main menu of an application.
(You can also achieve this by tapping the Alt-key). Shift-F10 also has a
default meaning, it makes the popupmenu of the active control appear.

When you press the F10 key it will not arrive as a WM_KEYDOWN message
but rather as a WM_SYSKEYDOWN message. Above I mentioned why this is the
case Wink

.

Is is *recommended* that you just leave this alone and stick with the
default Windows user interface. Customers are strange beasts, they want
this and that, but it is advisable to make sure that your application
reacts the same as other Windows applications.

Below is a little code snippit on how to trap the F10 key.

procedure TForm1.HandleMessage(var Msg: TMsg; var Handled: Boolean);
begin
if Msg.message = WM_SYSKEYDOWN then
if Msg.wParam = VK_F10 then
begin
Memo1.Lines.Add('F10');
Handled := True;
end;
if Msg.message = WM_KEYDOWN then
Memo1.Lines.Add('An other key');
end;

Regards,

Christophe Geers

And remember, Google is your friend.

Christophe Geers · Guest

And this question has nothing to do, with the Database Desktop. Please
post in the appropriate newsgroups. (I should have replied in the first
place, sigh)