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Check if scrollbar and parent are visible before redraw.

This commit is contained in:
Patrik Stridvall 1998-10-24 13:06:16 +00:00 committed by Alexandre Julliard
parent 0913cdf00f
commit d054b4123c
1 changed files with 1 additions and 0 deletions
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1
controls/scroll.c
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@ -565,6 +565,7 @@ void SCROLL_DrawScrollBar( HWND32 hwnd, HDC32 hdc, INT32 nBar,
if (!wndPtr || !infoPtr || if (!wndPtr || !infoPtr ||
((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) || ((nBar == SB_VERT) && !(wndPtr->dwStyle & WS_VSCROLL)) ||
((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) return; ((nBar == SB_HORZ) && !(wndPtr->dwStyle & WS_HSCROLL))) return;
if (!WIN_IsWindowDrawable( wndPtr, FALSE )) return;
vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect, vertical = SCROLL_GetScrollBarRect( hwnd, nBar, &rect,
&arrowSize, &thumbSize, &thumbPos ); &arrowSize, &thumbSize, &thumbPos );