[ros-diffs] [reactos] 02/02: [WIN32K:NTUSER] Fix gradient caption bars with low color depth (#3338)

[Dmitry Borisov]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=bc90cbbb88f1b845a230c…

commit bc90cbbb88f1b845a230cf5e5b331a8b5f8f0871
Author:     Dmitry Borisov <di.sean(a)protonmail.com>
AuthorDate: Sat Oct 31 01:06:30 2020 +0600
Commit:     Stanislav Motylkov <x86corez(a)gmail.com>
CommitDate: Sun Dec 20 23:12:30 2020 +0300

    [WIN32K:NTUSER] Fix gradient caption bars with low color depth (#3338)
    
    This fixes a problem when the window title bar is dithered down
    to the 16- or 256-color palette. See also commit 0705f30.
---
 win32ss/user/ntuser/sysparams.c | 12 +++++++++++-
 1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/win32ss/user/ntuser/sysparams.c b/win32ss/user/ntuser/sysparams.c
index 3907b17aff7..32b62cc026f 100644
--- a/win32ss/user/ntuser/sysparams.c
+++ b/win32ss/user/ntuser/sysparams.c
@@ -1583,7 +1583,17 @@ SpiGetSet(UINT uiAction, UINT uiParam, PVOID pvParam, FLONG fl)
             return SpiSetUserPref(UPM_LISTBOXSMOOTHSCROLLING, pvParam, fl);
 
         case SPI_GETGRADIENTCAPTIONS:
-            return SpiGetUserPref(UPM_GRADIENTCAPTIONS, pvParam, fl);
+        {
+            if (NtGdiGetDeviceCaps(ScreenDeviceContext, BITSPIXEL) <= 8)
+            {
+                INT iValue = 0;
+                return SpiGetInt(pvParam, &iValue, fl);
+            }
+            else
+            {
+                return SpiGetUserPref(UPM_GRADIENTCAPTIONS, pvParam, fl);
+            }
+        }
 
         case SPI_SETGRADIENTCAPTIONS:
             return SpiSetUserPref(UPM_GRADIENTCAPTIONS, pvParam, fl);