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whoson
Thailand
2 Posts |
 Posted - Jan 20 2012 : 22:30:57
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Current I'm Use DelPhi7 and TImageEnView For Preview Image and Zomm in,Out By Function Click On Component.Then I Try To Make Button For Zoom In,Out But I'm No Idea.
Please Help,or Guide
Thank You |
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fab
1310 Posts |
Posted - Jan 21 2012 : 00:42:11
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It is possible to change Zoom in code setting the property TImageEnView.Zoom. Example:
ImageEnView1.Zoom := 200; // 200% zoom
If you don't want to specify an absolute value, but just execute actions like Zoom-In or Zoom-Out, use:
// zoom in
ImageEnView1.ZoomIn();
...or...
// Zoom out
ImageEnView1.ZoomOut();
Also, you can zoom a specific area (centered at X,Y) of the image:
imageEnView1.ZoomAt(X, Y, Zoom);
There are other ways and methods related to zoom, please look at the documentation for more info. |
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whoson
Thailand
2 Posts |
Posted - Jan 21 2012 : 01:02:06
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Thank you For Answer,But MY ImageEn Version ImageEnView1 still Don't have ZoomIn();,.ZoomOut(); Propertie ,Just have Zoom();.
Now I Use Zoom():=120;,But It's Not Continue From Zoom By Click
Exp: First Zoom By Left Click Two Time Image will Zoom and then Click Button Zoom It will Reduce If Image > 120 ,How To to Get Value Last Image?
Sorry For My English Grammar.Hope You Understand Above Thank you |
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fab
1310 Posts |
Posted - Jan 21 2012 : 02:42:38
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quote:
Now I Use Zoom():=120;,But It's Not Continue From Zoom By Click
Exp: First Zoom By Left Click Two Time Image will Zoom and then Click Button Zoom It will Reduce If Image > 120 ,How To to Get Value Last Image?
I think you should write your own code to do it, handing single and double clicks events.
Just consider that following code is valid:
// increment zoom by 10
ImageEnView.Zoom := ImageEnView.Zoom + 10;
and
// decrement zoom by 10
ImageEnView.Zoom := ImageEnView.Zoom - 10;
This should be enough to answer your question. |
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How To Zoom In ,Out ?
