GetCanvasDCEx

Version history

This function was introduced in Quick PDF Library version 10.15.

Description

Creates a canvas of the specified size and returns a Windows device context DC that can be drawn on using Win32 drawing commands. When drawing operations are complete, call the LoadFromCanvasDC function to create a new document from the supplied drawing commands.

The Ex version of the function allows you to pass an existing Device Context handle as a reference when creating the DC.

The return value is defined as either an unsigned integer or a signed integer on different platforms and editions of the library.

Syntax

Delphi

function TDebenuPDFLibrary1811.GetCanvasDCEx(CanvasWidth, CanvasHeight,
ReferenceDC: Integer): Integer;

ActiveX

Function DebenuPDFLibrary1811.PDFLibrary::GetCanvasDCEx(CanvasWidth As Long,
CanvasHeight As Long, ReferenceDC As Long) As Long

DLL

int DPLGetCanvasDCEx(int InstanceID, int CanvasWidth, int CanvasHeight,
int ReferenceDC)

Parameters

CanvasWidth	The width of the canvas
CanvasHeight	The height of the canvas
ReferenceDC	The reference device context handle