JCL Help:TJclBitmap32.Handle
From Project JEDI Wiki
Jump to navigationJump to searchJCL Help: TJclBitmap32.Handle Property
[+] TJclBitmap32 Fields
[+] TJclBitmap32 Methods
[+] TJclBitmap32 Properties
Search in JCL Help
Search in all projects
Summary
Provides the device context handle of the contained DIB.
Pascal
public property Handle: HDC;
Description
The Handle property provides the device context handle of the contained DIB.
This handle may be used in low-level Windows API calls or, for example, to attach a TCanvas object to TJclBitmap32: var
Canvas: TCanvas;
begin
Canvas := TCanvas.Create; // create a new independent TCanvas object
try
Canvas.Handle := Bitmap32.Handle; // attach it to the Bitmap32 object
Canvas.Pen.Color := clRed; // use standard TCanvas methods for drawing
Canvas.Brush.Color := clGreen;
Canvas.Ellipse(10, 10, 60, 40);
finally
Canvas.Free;
end;
end;Handle contains zero, if the bitmap is empty (width or height is zero), and its value can change after resizing.
About
Donator
Alex Denissov
Contribute to this help topic
This documentation wiki is based on the collaborative effort of Project JEDI users. Your edits are welcome in order to improve documentation quality: edit this page
The JEDI Code Library source code is hosted at 
: link to view the current source code, link to the subversion repository
