How do I draw the selected list-box item in a different color?

问题

Is is possible to change the item selection focus color and text color in a TListBox?

When themes are not enabled in the project, or the list box style is set to owner-draw, the selection around the item is painted blue, which I believe is globally defined by the system's appearance settings.

I would like to change the color of selected items to a custom color.

So an example, the result would be something like this:

Note the last listbox has been modified in Paint to illustrate the example.

回答1:

try this:

procedure TForm1.ListBox1DrawItem(Control: TWinControl; Index: Integer;
  Rect: TRect; State: TOwnerDrawState);
begin
  with (Control as TListBox).Canvas do
  begin
    if odSelected in State then
      Brush.Color := $00FFD2A6;

    FillRect(Rect);
    TextOut(Rect.Left, Rect.Top, (Control as TListBox).Items[Index]);
    if odFocused In State then begin
      Brush.Color := ListBox1.Color;
      DrawFocusRect(Rect);
    end;
  end;
end;

回答2:

I saw, Style property has to be lbOwnerDrawFixed

回答3:

This helped me do something I needed to do also, namely, eliminate any visible selection. I modified the code above very slightly to accomplish this:

procedure TForm1.OnDrawItem(Control: TWinControl; Index: Integer;
  Rect: TRect; State: TOwnerDrawState);
begin
  with (Control as TListBox).Canvas do
  begin
    if odSelected in State then
    begin
      Brush.Color := clWhite;
      Font.Color := clBlack;
    end;

    FillRect(Rect);
    TextOut(Rect.Left, Rect.Top, (Control as TListBox).Items[Index]);
    if odFocused In State then begin
      Brush.Color := ListBox1.Color;
      DrawFocusRect(Rect);
    end;
  end;
end;

Made the selected item's background color white, and it's font color black, which did what I needed. Thanks so much!

来源：https://stackoverflow.com/questions/8563508/how-do-i-draw-the-selected-list-box-item-in-a-different-color

标签

Delphi

listbox

ownerdrawn