Rave Reports Developer Reference

TBaseReport. CalcGraphicHeight method

Declaration

function CalcGraphicHeight(Width: double; Graphic: TGraphic); double;

Category

Graphics

Description

This method will calculate and return the value for the new Height of the Graphic based on the Width value while maintaining the original ratio of the Graphic. This could be used to see if there is enough room left on the page before attempting to print the graphic. This can be used for both bitmaps and metafiles.

See also

TBaseReport Class, CalcGraphicWidth, PrintBitmap, PrintBitmapRect, StretchDraw

Example (Delphi)

Bitmap := TBitmap.Create;

Bitmap.LoadFromFile('RpDEMO.BMP');

PrintBitmapRect(X1, Y1, X1 + 3.0,

               Y1 + CalcGraphicHeight(3.0,Bitmap),Bitmap);

Bitmap.Free;

Example (C++Builder)

Graphics::TBitmap* Bitmap;

Bitmap = new Graphics::TBitmap();

Bitmap->LoadFromFile("RpDEMO.BMP");

rp1->PrintBitmapRect(X1, Y1, X1 + 3.0,

                 Y1 + rp1->CalcGraphicHeight(3.0,Bitmap),Bitmap);

delete Bitmap;