全透明窗体（效果比较好） (转)

全透明窗体（效果比较好） (转)[@more@]

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

来自 “ ITPUB博客 ” ，链接：http://blog.itpub.net/10752043/viewspace-993663/，如需转载，请注明出处，否则将追究法律责任。

转载于:http://blog.itpub.net/10752043/viewspace-993663/