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- { THIS IS THE OTHER ONE I WROTE AFTER THE TRANSPARENT RADIO
- BUTTON. IT IS A TRANSPARENT GROUP COMPONENT.
-
- Sgt Galen Smallen
- EIelson AFBm, AK
- }
-
- unit TransGrp;
-
- interface
-
- uses
- SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
- Forms, Menus, StdCtrls;
-
- type
- TTransGroup = class(TCustomGroupBox)
- private
- { Private declarations }
- function GetTransparent: Boolean;
- Procedure SetTransparent(Value: Boolean);
- protected
- { Protected declarations }
- procedure AlignControls(AControl: TControl; var Rect: TRect); override;
- procedure paint; override;
- public
- { Public declarations }
- constructor Create(AOwner: TComponent); override;
- destructor Destroy; override;
- procedure CreateParams(var Params: TCreateParams); override;
- { just in case someone wants to draw on us }
- property Canvas;
-
- published
- { Published declarations }
- property Align;
- property Caption;
- property Ctl3D;
- Property Cursor;
- property Color;
- property DragCursor;
- property DragMode;
- property Enabled;
- property Font;
- property Height default 100;
- Property HelpContext;
- property Hint;
- property left;
- property ParentColor;
- property ParentCtl3D;
- property ParentFont;
- property ParentShowHint;
- property PopupMenu;
- property ShowHint;
- property TabOrder;
- property TabStop;
- property Transparentcy: Boolean Read GetTransparent Write SetTransParent default True;
- property Visible;
- property Width default 100;
-
- property OnClick;
- property OnDblClick;
- property OnMouseDown;
- property OnMouseMove;
- property OnMouseUp;
- property OnKeyDown;
- end;
-
- procedure Register;
-
- implementation
-
- procedure Register;
- begin
- RegisterComponents('NewTools', [TTransGroup]);
- end;
-
- constructor TTransGroup.Create(AOwner: TComponent);
- begin
- { call mom }
- inherited Create(AOwner);
- { initialize and create some of our properties }
- Width := 100; Height := 100;
- end;
-
- destructor TTransGroup.Destroy;
- begin
- { destroy the properties that we created }
- { nothing in this case }
-
- { call gozer }
- inherited Destroy;
- end;
-
- procedure TTransGroup.CreateParams(var Params: TCreateParams);
- begin
- { call the create of the params }
- inherited CreateParams(Params);
-
- { and then add our twist, transparency }
- if Transparentcy then
- Params.ExStyle := Params.ExStyle + WS_EX_Transparent;
- end;
-
- procedure TTransGroup.Paint;
- var
- H: Integer;
- R: TRect;
- C: array [Byte] of Char;
- CLen: Integer;
- begin
- with Canvas do
- begin
- Font := Self.Font;
- H := TextHeight('0');
- R := Rect(0, H, Width, Height);
- if Ctl3D then
- begin
- Inc(R.Left);
- Inc(R.Top);
- Brush.Color := clBtnHighlight;
- FrameRect(R);
- OffsetRect(R, -1, -1);
- Brush.Color := clBtnShadow;
- end else
- Brush.Color := clWindowFrame;
-
- FrameRect(R);
- StrPCopy(C, Text);
- if C[0] <> #0 then
- begin
- StrPCopy(C, Text);
- CLen := StrLen(C);
- R := Rect(1, 0, 0, H);
- DrawText(Handle, C, CLen, R, DT_LEFT or DT_SINGLELINE or DT_CALCRECT);
- if Transparentcy then
- begin
- SetBkMode(Handle,TRANSPARENT);
- SetBkColor(Handle,Color);
- end;
- SetTextColor(Handle,Font.Color);
- DrawText(Handle, C, CLen, R, DT_LEFT or DT_SINGLELINE);
- end;
- end;
- end;
-
-
- procedure TTransGroup.AlignControls(AControl: TControl; var Rect: TRect);
- begin
- inherited AlignControls(Acontrol,Rect);
- end;
-
- function TTransGroup.GetTransparent: Boolean;
- begin
- Result := not (csOpaque in ControlStyle);
- end;
-
- procedure TTransGroup.SetTransparent(Value: Boolean);
- begin
- if Transparentcy <> Value then
- begin
- if Value then
- ControlStyle := ControlStyle - [csOpaque] else
- ControlStyle := ControlStyle + [csOpaque];
- Invalidate;
- end;
- end;
-
-
- end.
-
-