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Tried to colorize 1-px line under TMainMenu, need help
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Topic: Tried to colorize 1-px line under TMainMenu, need help (Read 3478 times)
AlexTP
Hero Member
Posts: 2402
Tried to colorize 1-px line under TMainMenu, need help
«
on:
September 19, 2020, 01:58:12 pm »
For Win32MenuStyler
https://wiki.freepascal.org/Win32MenuStyler
I need to colorize 1 px horizontal line under MainMenu. It is painted by OS in non-client area.
C++ sample how to do it:
https://stackoverflow.com/questions/57177310/how-to-paint-over-white-line-between-menu-bar-and-client-area-of-window
I tried to add it to Win32 WS, near the "WM_NCPAINT:" in TWindowProcHelper.DoWindowProc, but failed. I added:
Code: Pascal
[Select]
[+]
[-]
WM_NCPAINT
:
begin
if
TWin32ThemeServices
(
ThemeServices
)
.
ThemesEnabled
and
(
lWinControl is TCustomControl
)
and
not
(
lWinControl is TCustomForm
)
then
begin
TWin32ThemeServices
(
ThemeServices
)
.
PaintBorder
(
lWinControl
,
True
)
;
LMessage
.
Result
:
=
0
;
end
;
PaintLineUnderMenubar
(
TargetWindow
)
;
end
;
with my func:
Code: Pascal
[Select]
[+]
[-]
procedure
PaintLineUnderMenubar
(
Window
:
Hwnd
)
;
var
R
,
RScr
:
TRect
;
br
:
HBRUSH
;
dc
:
HDC
;
begin
if
not
IsWindow
(
Window
)
then
exit
;
if
GetMenu
(
Window
)
=
0
then
Exit
;
GetClientRect
(
Window
,
R
)
;
MapWindowPoints
(
Window
,
NULL
,
R
,
2
)
;
GetWindowRect
(
Window
,
RScr
)
;
OffsetRect
(
R
,
-
RScr
.
Left
,
-
RScr
.
Top
)
;
Dec
(
R
.
Top
)
;
R
.
Bottom
:
=
R
.
Top
+
2
;
dc
:
=
GetWindowDC
(
Window
)
;
br
:
=
CreateSolidBrush
(
clRed
)
;
FillRect
(
dc
,
R
,
br
)
;
DeleteObject
(
br
)
;
ReleaseDC
(
Window
,
dc
)
;
end
;
Can you help?
Screenshot of current white line - is added.
«
Last Edit: September 19, 2020, 04:14:28 pm by Alextp
»
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winni
Hero Member
Posts: 3197
Re: Tried to colorize 1-px line under TMainMenu, need help
«
Reply #1 on:
September 19, 2020, 03:30:24 pm »
Hi!
Your Rectangle has a height of zero:
R.Bottom := R.Top + 1;
This will fill the area from R.Top to R.Bottom -1. That is zero.
Do:
R.Bottom := R.Top + 2;
Allways the same trouble with the Integer-Rects.
Winni
PS.: Or just draw a line
«
Last Edit: September 19, 2020, 03:33:23 pm by winni
»
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Handoko
Hero Member
Posts: 5154
My goal: build my own game engine using Lazarus
Re: Tried to colorize 1-px line under TMainMenu, need help
«
Reply #2 on:
September 19, 2020, 03:48:38 pm »
I ever had such problem too in the past.
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AlexTP
Hero Member
Posts: 2402
Re: Tried to colorize 1-px line under TMainMenu, need help
«
Reply #3 on:
September 19, 2020, 04:15:05 pm »
@winni, thanks, edited the 1st post - it still don't work...
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wp
Hero Member
Posts: 11916
Re: Tried to colorize 1-px line under TMainMenu, need help
«
Reply #4 on:
September 19, 2020, 04:39:58 pm »
In Lazarus the WM* messages were renamed to LM*. Please try to catch message LM_NCPAINT.
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