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[SOLVED]How to change the color of the node branches of TreeView
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Topic: [SOLVED]How to change the color of the node branches of TreeView (Read 2919 times)
tomitomy
Sr. Member
Posts: 251
[SOLVED]How to change the color of the node branches of TreeView
«
on:
October 19, 2017, 12:26:18 pm »
Hi, I want to change the color of the node branches of TreeView, I don't know how to achieve, can someone help me?
«
Last Edit: October 21, 2017, 03:01:30 pm by tomitomy
»
Logged
wp
Hero Member
Posts: 11855
Re: How to change the color of the node branches of TreeView
«
Reply #1 on:
October 19, 2017, 03:38:00 pm »
Write a handler for the OnCustomDrawArrow event of the tree. Something like this:
Code: Pascal
[Select]
[+]
[-]
procedure
TForm1
.
TreeView1CustomDrawArrow
(
Sender
:
TCustomTreeView
;
const
ARect
:
TRect
;
ACollapsed
:
Boolean
)
;
begin
Sender
.
Canvas
.
Brush
.
Color
:
=
clSilver
;
Sender
.
Canvas
.
FillRect
(
ARect
)
;
if
ACollapsed
then
begin
Sender
.
Canvas
.
Font
.
Color
:
=
clRed
;
Sender
.
Canvas
.
TextOut
(
ARect
.
Left
+
(
ARect
.
Width
-
Sender
.
Canvas
.
TextWidth
(
'+'
)
)
div
2
,
ARect
.
Top
+
(
ARect
.
Height
-
Sender
.
Canvas
.
TextHeight
(
'+'
)
)
div
2
,
'+'
)
;
end
else
begin
Sender
.
Canvas
.
Font
.
Color
:
=
clGreen
;
Sender
.
Canvas
.
TextOut
(
ARect
.
Left
+
(
ARect
.
Width
-
Sender
.
Canvas
.
TextWidth
(
'-'
)
)
div
2
,
ARect
.
Top
+
(
ARect
.
Height
-
Sender
.
Canvas
.
TextHeight
(
'-'
)
)
div
2
,
'-'
)
;
end
;
Sender
.
Canvas
.
Brush
.
Style
:
=
bsClear
;
Sender
.
Canvas
.
Pen
.
Color
:
=
clGray
;
Sender
.
Canvas
.
Rectangle
(
ARect
)
;
end
;
Logged
tomitomy
Sr. Member
Posts: 251
Re: How to change the color of the node branches of TreeView
«
Reply #2 on:
October 19, 2017, 06:14:30 pm »
Thank you, @wp, you helped me, I know what to do next, thank you very much!
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[SOLVED]How to change the color of the node branches of TreeView
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