TIEBitmap.CopyFromTBitmap
Declaration
procedure CopyFromTBitmap(Source: TBitmap; SyncRGBA: Boolean = False);
Description
Copies the image from the
Source TBitmap object.
Permitted values for source PixelFormat are: pf1bit, pf4bit, pf8bit, pf15bit, pf16bit, pf24bit, pf32bit, pfDevice (pfDevice images will be treated as pf24bit).
If
Location is ieTBitmap, then only pf1bit and pf24bit and pf32bit are accepted.
If SyncRGBA is enabled and the source bitmap is a 32bit (RGBA), then
SynchronizeRGBA( True, True ) is called after the copy to fill the
AlphaChannel (converting it from ie32RGB to ie24RGB + Alpha Channel). If not, the
AlphaLocation will be set to iaRGBA.
// Display the same image as a TImage
ImageEnView1.IEBitmap.CopyFromTBitmap( Image1.Picture.Bitmap );
ImageEnView1.Update();
// Copy 32bit BMP to TIEBitmap with Alpha
iebmp := TIEBitmap.Create();
bmp := TBitmap.Create();
... Get 32bit Bitmap, e.g. bmp.LoadFromFile('D:\BMP32.bmp');
iebmp.CopyFromTBitmap( bmp );
iebmp.SynchronizeRGBA( True, True ); // Convert 32bit RGBA to 24bit Image + Alpha channel
iebmp.SaveToFile( 'D:\Alpha.png' );
bmp.Free;
iebmp.Free;
See Also
◼SynchronizeRGBA◼CopyToTBitmap◼AssignToTIEBitmap Assignment and Drawing Methods
TIEBitmap Methods | Method | Mode | Purpose |
| Assign | From TIEBitmap/TBitmap/TGraphic/TIcon | Copy whole image |
| AssignImage | From TIEBitmap | Like assign, but does not copy the alpha channel |
| AssignRect | From TIEBitmap/TBitmap | Copy a specified rect |
| CopyAndConvertFormat | From TIEBitmap | Copy whole image |
| CopyRectTo | To TIEBitmap | Copy rect to another image (without scaling) |
| CopyWithMask1 | To TIEBitmap | Copy image using a mask to specify what is copied from the source |
| CopyWithMask2 | To TIEBitmap | Copy image using a mask to specify what is replaced in the destintation |
| DrawToTIEBitmap | To TIEBitmap | Copies all or part of the image to a specified position and/or size |
| JoinBitmaps | From two TIEBitmaps | Draws two bitmaps to a single bitmap |
| MergeAlphaRectTo | With TIEBitmap | Merges the alpha channels of two TIEBitmaps using merge rules |
| MergeWithAlpha | With TIEBitmap | Merges all or part of two TIEBitmaps with alpha channels to a specified position |
| RenderToTIEBitmapEx | To TIEBitmap | Extended drawing of content to a TIEBitmap |
| StretchRectTo | To TIEBitmap | Copy rect to dest rect in another image (with scaling) |
| SwitchTo | To TIEBitmap | Move content from one TIEBitmap to another |
| Method | Mode | Purpose |
| Assign | From TIEBitmap/TBitmap/TGraphic/TIcon | Copy whole image |
| AssignTo | To TIEBitmap/TBitmap | Copy whole image with optional scaling |
| AssignRect | From TIEBitmap/TBitmap | Copy a specified rect |
| CopyFromTBitmap | From TBitmap | Copy whole image |
| CopyToTBitmap | To TBitmap | Copy whole image |
| RenderToTBitmapEx | To TBitmap | Extended drawing of content to a TBitmap |