Article	41023999
Type	HowTo
Product	Engine
Version	5.1.1.1037
Date Added	6/3/2005
Submitted by	Friedhelm Grossekathofer
Keywords

Subject

Screen (TScreen) variable in Delphi.

Summary

Within Delphi a variable Screen is automaticly created at runtime. This variable represents the monitor. You can find out what form is active... The variable is of type TSreen.

But when using VDPro screen becomes a constant and is of type integer. When I look up for the declaration of screen I see screen is redefined in VDProLib5_TLB in rhe section vdConstPrintMode.

Solution

When you are using the VectorDraw component in your project instead of calling Delphi's screen like :

begin
    a:=Screen.Width /2;
    form1.Caption:=FloatToStr(a);
end

use it like :

begin
    a:=Forms.Screen.Width /2;
    form1.Caption:=FloatToStr(a);
end