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[WIN32K:NTUSER] Avoid dereferencing a null pointer in NC_DoNCPaint. CORE-15569

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Thomas Faber 2019-01-08 11:26:26 +01:00
parent a3f8813fff
commit b2dcb8e0d8
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1 changed files with 5 additions and 3 deletions
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8
win32ss/user/ntuser/nonclient.c
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@ -1148,11 +1148,13 @@ NC_DoNCPaint(PWND pWnd, HDC hDC, INT Flags)
FillRect(hDC, &TempRect, IntGetSysColorBrush(COLOR_BTNFACE)); FillRect(hDC, &TempRect, IntGetSysColorBrush(COLOR_BTNFACE));
if (Parent) if (Parent)
{
IntGetClientRect(Parent, &ParentClientRect); IntGetClientRect(Parent, &ParentClientRect);
if (HASSIZEGRIP(Style, ExStyle, Parent->style, WindowRect, ParentClientRect)) if (HASSIZEGRIP(Style, ExStyle, Parent->style, WindowRect, ParentClientRect))
{ {
DrawFrameControl(hDC, &TempRect, DFC_SCROLL, DFCS_SCROLLSIZEGRIP); DrawFrameControl(hDC, &TempRect, DFC_SCROLL, DFCS_SCROLLSIZEGRIP);
}
} }
IntDrawScrollBar(pWnd, hDC, SB_VERT); IntDrawScrollBar(pWnd, hDC, SB_VERT);