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 Prevent the IMAGE-CHANGED status for ImageEnView1?		  New Topic  Reply to Topic
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PeterPanino

933 Posts
Posted - Aug 26 2020 :  07:46:50  Show Profile  Reply
Making a change to the TImageEnView image, for example:

ImageEnMView1.CopyToIEBitmap(idx, MainForm.formMain.ImageEnView1.IEBitmap, True);


...causes the ImageEnView1 SAVE Toolbar-Button to change from DISABLED to ENABLED

How can I suppress this IMAGE-CHANGED status for ImageEnView1 for any specific cases and thus prevent the enabling of the Save toolbar-button?

BTW, how to temporarily disable a specific Toolbar Button, e.g. IEViewSave_Button_ID?

xequte

38615 Posts
Posted - Aug 26 2020 :  16:07:51  Show Profile  Reply
Hi Peter

1. In the TImageEnView.OnImageChange event, you can set ImageEnView1.Modified := False;

Alternatively, if you are using a TImageEnViewToolbar (i.e. not the automatic TImageEnView popup toolbar), you could iterate over the buttons to find the one with the TImageEnViewSave action and set EnableOnlyWhenChanged := False;


2. Specific buttons cannot be enabled/disabled as it is handled by TActions. You can only include/exclude buttons using:

https://www.imageen.com/help/TCustomImageEnToolbar.OnAddButton.html
https://www.imageen.com/help/TIEImageEnGlobalSettings.OnAddToolbarButton.html

Nigel
Xequte Software
www.imageen.com
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PeterPanino

933 Posts
Posted - Aug 26 2020 :  16:32:51  Show Profile  Reply
Hi Nigel,

with the above code:

ImageEnMView1.CopyToIEBitmap(idx, MainForm.formMain.ImageEnView1.IEBitmap, True);


... neither the OnImageChange event-handler nor the OnImageChangeEx event-handler for ImageEnView1 gets triggered - but yet the SAVE button gets activated!

Could you please provide a code example on how to "iterate over the buttons to find the one with the TImageEnViewSave action"? Thank you!

PS: I have tried this code but was stuck on how to access the button's action:

procedure TformMain.DisableSaveToolbarButton;
var
  bt: TImageEnViewButton;
begin
  // iterate over the buttons to find the one with the TImageEnViewSave action and set EnableOnlyWhenChanged := False;

  for bt := Low(TImageEnViewButton) to High(TImageEnViewButton) do
  begin
    // how to find the one with the TImageEnViewSave action?
  end;
end;
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PeterPanino

933 Posts
Posted - Aug 26 2020 :  17:42:13  Show Profile  Reply
Working solution:

ImageEnMView1.CopyToIEBitmap(idx, MainForm.formMain.imgMain.IEBitmap, True); 
MainForm.formMain.imgMain.Modified := False;


With this, I don't need to manually disable the SAVE button - it remains disabled!
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PeterPanino

933 Posts
Posted - Aug 27 2020 :  04:47:56  Show Profile  Reply
However, when pasting with the PASTE TOOLBAR-BUTTON then the SAVE-BUTTON gets ALWAYS ENABLED!

So PLEASE implement TImageEnView.OnPaste event and an event when any Toolbar-Button is clicked to get notified which toolbar-button has been clicked! Thank you!
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xequte

38615 Posts
Posted - Aug 27 2020 :  20:03:47  Show Profile  Reply
Hi Peter

In the v9.1.2 beta there is an OnActionExecute event which you can use to react to paste actions.



Nigel
Xequte Software
www.imageen.com
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PeterPanino

933 Posts
Posted - Aug 28 2020 :  03:05:25  Show Profile  Reply
Hi Nigel,

Thanks for the information. When will v9.1.2(+) Release be available?
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xequte

38615 Posts
Posted - Aug 30 2020 :  22:43:46  Show Profile  Reply
Hi

Before the end of September. You can email us for a pre-release if you like.

Nigel
Xequte Software
www.imageen.com
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