I have a TRichEdit with the ScrollBars property set to ssBoth, but i need a way to check if the scroll bar is enabled.
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yes, is it currently active.
i need this because if a user resizes the form the richedit is also resized to stay in proportion, but if the scroll bar is active and the form was resized quick, GetScrollPos() will not always return 0.
so my aim is to make a function like
function ScrollPos:Integer;
begin
if Active then
//Scrollpos result
else
Result:= 0;
end;
try this
*********************UNIT CODE*********************
unit Unit1;
interface
uses
Windows, Messages, SysUtils, Classes, Graphics, Controls, Forms, Dialogs,
StdCtrls, ComCtrls;
type
TForm1 = class(TForm)
RichEdit1: TRichEdit;
Button1: TButton;
Label1: TLabel;
procedure Button1Click(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
Form1: TForm1;
implementation
{$R *.DFM}
procedure TForm1.Button1Click(Sender
var
lInfo: TScrollBarInfo;
lh: HWnd;
begin
FillChar(lInfo, Sizeof(lInfo), 0);
lInfo.cbSize := Sizeof(lInfo);
GetScrollBarInfo(richedit1
lInfo);
if ((lInfo.rgstate[0] and STATE_SYSTEM_INVISIBLE) = STATE_SYSTEM_INVISIBLE) then
label1.caption:='Vert Scroll Bar Not visible'
else
label1.caption:='Vert Scroll Bar Visible'
end;
end.
**************FORM CODE**********************
object Form1: TForm1
Left = 23
Top = 29
Width = 307
Height = 217
Caption = 'Form1'
Color = clBtnFace
Font.Charset = DEFAULT_CHARSET
Font.Color = clWindowText
Font.Height = -11
Font.Name = 'MS Sans Serif'
Font.Style = []
OldCreateOrder = False
PixelsPerInch = 96
TextHeight = 13
object Label1: TLabel
Left = 132
Top = 140
Width = 32
Height = 13
Caption = 'Label1'
end
object RichEdit1: TRichEdit
Left = 28
Top = 32
Width = 229
Height = 89
Lines.Strings = (
'RichEdit1')
ScrollBars = ssBoth
TabOrder = 0
end
object Button1: TButton
Left = 24
Top = 132
Width = 75
Height = 25
Caption = 'Button1'
TabOrder = 1
OnClick = Button1Click
end
end
**************************
regards
Business Accounts
Answer for Membership
by: wildzeroPosted on 2006-04-20 at 14:19:44ID: 16502684
By enabled you mean, is showing up? (ie the user has lots of text in the box?)