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[WIN32SS] Fix multiple scrollbar redraw issues

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This fixes:
- CORE-15911 "Scrollbars do not dissapear when Maximizing and not needed"
- CORE-10617 "ListView corrupt scrollbar upon resizing the column-header"

and will appease regression:
- CORE-15429 "Uninitialized scrollbars in 'My Computer'"

By applying clientFix.patch from CORE-15911 contributed by JIRA-user 'I_Kill_Bugs'.

https://reactos.org/testman/compare.php?ids=66723,66729

Earlier I already committed this fix into 0.4.12-RC-9-g
5ac548544f
This commit is contained in:
Joachim Henze 2019-06-22 22:27:23 +02:00
parent 89c936fdd6
commit 1158c24194
1 changed files with 7 additions and 3 deletions
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10
win32ss/user/ntuser/winpos.c
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@ -1832,7 +1832,7 @@ co_WinPosSetWindowPos(
}
/* Calculate the non client area for resizes, as this is used in the copy region */
if (!(WinPos.flags & SWP_NOSIZE))
if ((WinPos.flags & (SWP_NOSIZE | SWP_FRAMECHANGED)) != SWP_NOSIZE)
{
VisBeforeJustClient = VIS_ComputeVisibleRegion(Window, TRUE, FALSE,
(Window->style & WS_CLIPSIBLINGS) ? TRUE : FALSE);
@ -1973,12 +1973,16 @@ co_WinPosSetWindowPos(
*/
CopyRgn = IntSysCreateRectpRgn(0, 0, 0, 0);
if (WinPos.flags & SWP_NOSIZE)
if ((WinPos.flags & SWP_NOSIZE) && (WinPos.flags & SWP_NOCLIENTSIZE))
RgnType = IntGdiCombineRgn(CopyRgn, VisAfter, VisBefore, RGN_AND);
else if (VisBeforeJustClient != NULL)
{
RgnType = IntGdiCombineRgn(CopyRgn, VisAfter, VisBeforeJustClient, RGN_AND);
REGION_Delete(VisBeforeJustClient);
}
if (VisBeforeJustClient != NULL)
{
REGION_Delete(VisBeforeJustClient);
}
/* Now use in copying bits which are in the update region. */