Hi! I need to enable a Save button AFTER the PROCESSING of a TImageEn has finished. So I put a TImageEnProc on the form and set its AttachedImageEn property to ImageEn1.
However, when I process the ImageEn1 with one of the preset ImageEnViewProc actions from the ImageEn library, the ImageEnProc1.OnFinishWork event is not triggered!
So how can I implement an event handler which is triggered after the ImageEn processing from a preset ImageEn action?
I assume ImageEn1 is a TImageEnView, so you do not need to use a TImageEnProc, instead just call ImageEn1.Proc....
At any rate, saving does not use a TImageEnProc object (which is for editing and analayzing images) it uses a TImageEnIO object (loading and saving images). Which you can access via ImageEn1.IO...
And just ImageEn1.OnFinishWork to know when saving has completed.
Please note: I need to enable something after the PROCESSING of an image has finished (i.e. after a PROC function), NOT when saving has finished. When I use TImageEn.OnFinishWork, then it would fire also after saving which I do not want.
And BTW: I do the PROCESSING in this case with the predefined ImageEn Actions, so I cannot use ActionList.OnExecute, because that event is fired BEFORE the action is executed.
It should not matter whether it is saving or editing. The ImageEn actions use TImageEnView.Proc, and TImageEnView.Proc.OnFinishWork is assigned to TImageEnView.OnFinishWork.
I will investigate when I am back in the office next week.
To determine the task type, check the class of the sender:
if Sender is TImageEnIO then
MainForm.Caption := 'IO Task has finished'
else
if Sender is TImageEnProc then
MainForm.Caption := 'Processing Task has finished'
else
MainForm.Caption := 'Unexpected result!';
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OnFinishWork event handler for actions?
Posted - Apr 11 2015 : 13:09:33
