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#1 Posted : Friday, March 30, 2012 8:09:29 AM(UTC)
tbecker82

Groups: Registered
Posts: 37


Hi

Title pretty much says it.  Is there an equivalent to this in the C++ library toolkit?

I need to do what this gentlemen described in the last post.

http://support.leadtools.com/CS/forums/18791/ShowPost.aspx

I am using v17.5 with MFC.

Thanks
 

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#2 Posted : Monday, April 2, 2012 6:02:14 AM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,328

Was thanked: 1 time(s) in 1 post(s)

There is no exact equivalent for AnnTransformer in the C++ classes. There are methods that perform similar functions, such as the following members of LAnnotation:
GetOffsetX
GetOffsetY
GetScalarX
GetScalarY
SetOffsetX
SetOffsetY
SetScalarX
SetScalarY
See the help topic "Low-Level Coordinate System for Annotations" in the main Class Library help file.

Please give me more details about what you're trying to do, and I can try to help you do it using our functions.

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
#3 Posted : Monday, April 2, 2012 9:41:25 AM(UTC)
tbecker82

Groups: Registered
Posts: 37


What I have is a LBitmapWindow that is displaying a bitmap.  The zoom mode is set to ZOOM_FIT.  Since in this mode, padding is automatically added to maintain the aspect ratio, I need some way to get the actual size of the bitmap in screen coordinates to do some calculations.  If I change the zoom mode to ZOOM_STRETCH, I can call GetClienttRect and get the size of the control that is parent to the bitmap and do my calculations that way but if the user re-sizes the control I of course lose the aspect ratio.

Thanks


 
#4 Posted : Monday, April 2, 2012 11:01:54 PM(UTC)
Maen Hasan

Groups: Registered, Tech Support
Posts: 1,328

Was thanked: 1 time(s) in 1 post(s)

If you want to convert from client coordinates to bitmap coordinates, and not specifically for an annotations object, you can use the formula in this forum post:
http://support.leadtools.com/cs/forums/34411/ShowPost.aspx

You can also use the same rectangles to do the inverse calculation from bitmap to client coordinates if you need it.

Thanks,
Maen Badwan
LEADTOOLS Technical Support
 
#5 Posted : Tuesday, April 3, 2012 6:24:49 AM(UTC)
tbecker82

Groups: Registered
Posts: 37


Maen,

Thank you, that is what I was looking for.

tbecker82


 
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