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Date Posted: 11:18:09 09/19/03 Fri
Author: Mike Haiss
Subject: Re: Crop Question
In reply to: Michel 's message, "Re: Crop Question" on 06:40:54 09/19/03 Fri

I have checked the values of Rect and they are correct...

>
>Hi Mike,
>
>Just from the code it looks fine. The only thing I can
>see is that sometimes the Rect parameter contains
>invalid values.
>
>Best regards,
>
>Michel
>
>>Ok, I was wondering if you could explain this.
>>The following code works on some images and doesn't on
>>others. The ones it does not work on it will crop
>>right on the second try, but the first crop you
>>attempt is always wrong. Any ideas?
>>
>>Code is as follows....
>>
>>void __fastcall TForm1::ImageScrollBox1QuickSelect(
>> const TImageScrollBox *Sender, const DibGraphic
>> *Graphic, const TRect &Rect){
>>
>> TCropTransform *transForm = new TCropTransform;
>> transForm->CropMode = cmExtractRect;
>> transForm->Top = Rect.Top;
>> transForm->Bottom = Rect.Bottom;
>> transForm->Left = Rect.Left;
>> transForm->Right = Rect.Right;
>> transForm->Apply(ImageScrollBox1->Graphic);
>> ImageScrollBox1->Redraw(true);
>> delete transForm;
>>}
>>
>>Thanks for your time.
>>
>>>
>>>Hi Mike,
>>>
>>>You should use the mmSelect mouse mode instead of
>>>mmQuickSelect.
>>>
>>>Then when a selection is active you can use,
>>>
>>>(ImageScrollBox.MouseHandler as
>>>TRubberbandMouseHander).GetSelection(Rect);
>>>
>>>This will give you the coordinates of the selected
>>>rectangle.
>>>
>>>Best regards,
>>>
>>>Michel
>>>
>>>
>>>>I want to crop a tiff image loaded in an
>>>>ImageScrollBox using the mmQuickSelect mouse mode to
>>>>select the area.
>>>>Is there an easy way to calculate the number of
>>pixels
>>>>the Select box/rubberband is from the edge of the
>>>>image?
>>>>
>>>>Using C++ Builder 5
>>>>Thanks!

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