DrawImageAndRelease
Image handling, Page layout, Optimisation
Description
Draws the specified image on the selected page, then releases its image handle from the document image cache after the page resource reference has been registered
Reference page for DrawImageAndRelease. The function belongs to Image handling, Page layout, Optimisation and keeps all identifiers exactly as shown
Syntax
Delphi
Function TPDFlib.DrawImageAndRelease(ImageID: Integer; Left, Top, Width, Height: Double): Integer;ActiveX
Function PDFlib::DrawImageAndRelease(ImageID As Long, Left As Double, Top As Double, Width As Double, Height As Double) As LongDLL
int DLDrawImageAndRelease(int InstanceID, int ImageID, double Left, double Top, double Width, double Height);Return values
| ImageID | The image handle returned by an image creation or import function |
|---|---|
| Left | The horizontal co-ordinate of the left edge |
| Top | The vertical co-ordinate of the top edge |
| Width | The drawn width |
| Height | The drawn height |
Return values
| 0 | The image handle was invalid, the image could not be drawn, or the handle could not be released |
|---|---|
| 1 | The image was drawn and the handle was released |
See also
The saved PDF retains the image object because the page resource dictionary already references it before the cache handle is released
After this function succeeds, SelectImage(ImageID) returns 0 for that released handle