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全透明窗体(效果比较好)

 2006-02-04 13:36:09 来源:WEB开发网   
核心提示:全透明窗体(效果比较好)uses里加上ExtCtrlsPRocedure tform1.setformtransparent;var I: Integer; FullRgn, ClientRgn, ControlRgn: THandle; Margin, MarginX, MarginY, X,
全透明窗体(效果比较好)
uses里加上ExtCtrls
PRocedure tform1.setformtransparent;
var
  I: Integer;
  FullRgn,
  ClientRgn,
  ControlRgn: THandle;
  Margin,
  MarginX,
  MarginY,
  X,
  Y: Integer;
  W,H,S :Integer;
  bX,bY :Integer;
  c   :TColor;
begin
  Margin := (Width - ClientWidth) div 2;
  FullRgn := CreateRectRgn(0, 0, Width, Height);
  MarginX := Margin;
  MarginY := Height - ClientHeight - Margin;
  ClientRgn := CreateRectRgn(MarginX, MarginY, MarginX + ClientWidth, MarginY + ClientHeight);
  CombineRgn(FullRgn, FullRgn, ClientRgn, RGN_DIFF);
  DeleteObject(ClientRgn);
  for I:=0 to ControlCount-1 do
  begin
   X := MarginX + Controls[I].Left;
   Y := MarginY + Controls[I].Top;
   W:=Controls[I].Width;
   H:=Controls[I].Height;
{}
   if controls[i] is timage then begin
    with controls[i] as tImage do begin
     c:=Picture.Bitmap.Canvas.Pixels[0,0];
     for bX:=0 to Picture.Bitmap.Width-1 do begin
      for bY:=0 to Picture.Bitmap.Height-1 do begin
       if Picture.Bitmap.Canvas.Pixels[bX,bY]<>c then begin
        ControlRgn := CreateRectRgn(X+bX, Y+bY, X + bX+1, Y + bY+1);
        CombineRgn(FullRgn, FullRgn, ControlRgn, RGN_OR);
        DeleteObject(ControlRgn);
       end;
      end;
     end;
    end;
   end else
{}
   if controls[i] is tShape then begin
    if W < H then S := W else S := H;
    if (Controls[i] as tshape).Shape in [stSquare, stRoundSquare, stCircle] then
    begin
     Inc(X, (W - S) div 2);
     Inc(Y, (H - S) div 2);
     W := S;
     H := S;
    end;
    Inc(W); Inc(H); Inc(S);
    case (controls[i] as tshape).Shape of
     stRectangle, stSquare:
      ControlRgn := CreateRectRgn(X, Y, X + W, Y + H);
     stRoundRect, stRoundSquare:
      ControlRgn := CreateRoundRectRgn(X, Y, X + W, Y + H, S div 4, S div 4);
     stCircle, stEllipse:
      ControlRgn:=CreateEllipticRgn(X, Y, X + W, Y + H);
    else
     ControlRgn := CreateRectRgn(X, Y, X + W, Y + H);
    end;
    CombineRgn(FullRgn, FullRgn, ControlRgn, RGN_OR);
    DeleteObject(ControlRgn);
   end else
{}
   begin
    ControlRgn := CreateRectRgn(X, Y, X + W, Y + H);
    CombineRgn(FullRgn, FullRgn, ControlRgn, RGN_OR);
    DeleteObject(ControlRgn);
   end;
  end;
  SetWindowRgn(Handle, FullRgn, True);
  DeleteObject(FullRgn);
end;

procedure TForm1.FormResize(Sender: TObject);
begin
     setformtransparent;
end;

//rock
//转载请保留此信息

Tags:透明 窗体 效果

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