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Cannot save Image after changing brightness

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T O P I C R E V I E W
dracola	Posted - Mar 17 2016 : 05:27:10 Hi, i want to ask how to save image after changing brightness with ImageEnView1.IEBitmap.ChannelOffset[0] here my code : //changing brightness according trackbar brighttrackbar.Position:= brighttrackbar.Position+10; ImageEnView1.IEBitmap.ChannelOffset[0]:=round(brighttrackbar.Position); ImageEnView1.IEBitmap.ChannelOffset[1]:=round(brighttrackbar.Position); ImageEnView1.IEBitmap.ChannelOffset[2]:=round(brighttrackbar.Position); ImageEnView1.Update; //save image ImageEnView1.Proc.ClearAllUndo; ImageEnView1.IO.SaveToFile('C:\Filename.jpg'); result saved image is the same as old image without changing on brightness. when i uses : ImageEnView1.Proc.AdjustBrightnessContrastSaturation(brighttrackbar,0,0); and then save, it's can save the change. But this code processing to long time, and result not as good using : ImageEnView1.IEBitmap.ChannelOffset[0]. how can i saved change with ImageEnView1.IEBitmap.ChannelOffset[0] thank's & best rgds
2 L A T E S T R E P L I E S (Newest First)
dracola	Posted - Mar 17 2016 : 22:38:13 yeah it's work... thanks a lot w2w for fast respond ^_^
w2m	Posted - Mar 17 2016 : 09:07:56 Changing the ChannelOffset only affects the displayed image so when saving the file the ChannelOffset values are not saved. To save the ChannelOffset or "brightness" to an image saved to a file you must call FixChannelOffset before saving the image. procedure TForm1.SaveAs1Click(Sender: TObject); begin if SavePictureDialog1.Execute then begin ImageEnView1.IEBitmap.FixChannelOffset(); ImageEnView1.IO.SaveToFile(SavePictureDialog1.FileName); end; end; FixChannelOffset makes the ChannelOffset property permanent (applying specified offset). FixChannelOffset only works for ie24RGB, ie32RGB and ie48RGB pixel formats. The FixChannelOffset method resets ChannelOffset property values to zero. Bill Miller Adirondack Software & Graphics Email: w2m@hughes.net EBook: http://www.imageen.com/ebook/ Custom Commercial ImageEn Development