PrinterGetCanvas

Prototype

IntHandle:=PrintGetCanvas

Description

Returns canvas handle.

Parameters

None.

Returned value

IntHandle: integer value corresponding to the canvas handle. It is value is 0 if the print not work

Notes

None.

Example

// It selects printer

PrinterSelect('HP LaserJet III');

// Start print

if not PrinterStart('Test print',1) then

 begin

   // Abort sprint if there are errors

   PrinterAbort;

   PrinterStart('Test print',1);

 end;

//It gets canvas handle

Paper:=PrinterGetCanvas;

//It gets print area size and resolution

WidthArea:=CanvasGetHorzSize(Paper);

HeightArea:=CanvasGetVertSize(Paper);

ResHorz:=CanvasGetHorzRes(Foglio);

ResVert:=CanvasGetVertRes(Foglio);

// It calculates distance among grid cells to draw

StepV:=HeightArea div 10;

StepH:=WidthArea div 10;

// Draw grid

CanvasSetPen(Paper,3,0,$000000);

For L:=0 to 10 do

 begin

  CanvasDrawLine(Paper,L*StepH,0,L*StepH,HeightArea);

  CanvasDrawLine(Paper,0,L*StepV,WidthArea,L*StepV);

 end;

// Text draw

CanvasSetFont(Paper,'Arial',18,True,True,True,$000000);

CanvasDrawText(Paper,100,100,'Test print');

// End print operation

PrinterEnd;