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 ImageEn Library for Delphi, C++ and .Net
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 Photoshop hand tool
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pierrotsc

USA
328 Posts

Posted - Feb 11 2019 :  12:47:40  Show Profile  Reply
How and where would you code to create the photoshop behavior that if you hold the space bar, you are able to use the miscroll mouse interact ?

Thanks

xequte

4252 Posts

Posted - Feb 11 2019 :  19:14:01  Show Profile  Reply
Hi

There is no built-in functionality for that, but you might be able to achieve it using the KeyDown and KeyUp events.

Nigel
Xequte Software
www.imageen.com
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pierrotsc

USA
328 Posts

Posted - Feb 12 2019 :  08:37:07  Show Profile  Reply
Yes, that is what I meant. just wanted to know what to write in the keydown event.
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pierrotsc

USA
328 Posts

Posted - Feb 12 2019 :  10:14:32  Show Profile  Reply
Right now, i have that in the onkeydown event
if HiWord(GetKeyState(vk_space)) <> 0 then
imageenview.MouseInteract := [miScroll]

that works but when i release the space bar, i would like to have the previous mouseinteract back. is taht possible ?
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w2m

USA
1973 Posts

Posted - Feb 12 2019 :  11:02:17  Show Profile  Reply
Try this:
public
    { Public declarations }
    AMouseInteract: TIEMouseInteract;

procedure TForm1.ImageEnView1KeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  AMouseInteract := ImageEnView1.MouseInteract;
  if HiWord(GetKeyState(vk_space)) <> 0 then
    ImageEnView1.MouseInteract := [miScroll]
  else
    ImageEnView1.MouseInteract := AMouseInteract;
end;
Define AMouseInteract as a public var and set AMouseInteract to the ImageEnView1.MouseInteract in the methods where you set the mouseinteract:
procedure TForm1.SelectRect1Click(Sender: TObject);
begin
  ImageEnView1.MouseInteract := [miSelect];
  AMouseInteract := ImageEnView1.MouseInteract;
end;

procedure TForm1.SelectEllipse1Click(Sender: TObject);
begin
  ImageEnView1.MouseInteract := [miSelectCircle];
  AMouseInteract := ImageEnView1.MouseInteract;
end;

Bill Miller
Adirondack Software & Graphics
Email: w2m@hughes.net
EBook: http://www.imageen.com/ebook/
Custom Commercial ImageEn Development
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pierrotsc

USA
328 Posts

Posted - Feb 12 2019 :  11:41:27  Show Profile  Reply
Thanks Bill. When i release the space bar, the miscroll is still selected as i can move the image around although i had the miselectcircle selected previously. I setup the code like you did. Maybe something should be in the onkeyup event ?
Thanks
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TonyAntonio

USA
4 Posts

Posted - Feb 13 2019 :  12:08:08  Show Profile  Reply
Thanks for the tip, fellas! I didn't know that there was more than one way to accomplish this.
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pierrotsc

USA
328 Posts

Posted - Feb 13 2019 :  12:10:28  Show Profile  Reply
Are you using a better way ? It is not working for me. when i release the space bat, the miscroll is still selected.
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xequte

4252 Posts

Posted - Feb 14 2019 :  02:48:26  Show Profile  Reply
Hi

Looks like in KeyUp you should add:

ImageEnView1.MouseInteract := AMouseInteract;

Nigel
Xequte Software
www.imageen.com
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pierrotsc

USA
328 Posts

Posted - Feb 15 2019 :  09:28:25  Show Profile  Reply
Nope, still keep the miscroll, does not revert to miselect if that was the last command selected.
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pierrotsc

USA
328 Posts

Posted - Feb 15 2019 :  09:52:11  Show Profile  Reply
I think the issue is that the amouseintecat does not keep the last tool. let me look into that.
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pierrotsc

USA
328 Posts

Posted - Feb 15 2019 :  09:54:38  Show Profile  Reply
Got it to work now...Thanks for all the adice. awesome forum.
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