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SetScrollInfo : don't show/hide scrollbar if no parameter (minval, 

maxval) change.
This commit is contained in:
Gerard Patel 2000-09-12 23:59:10 +00:00 committed by Alexandre Julliard
parent 7f04a17ec6
commit ed66930518
1 changed files with 7 additions and 3 deletions
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10
controls/scroll.c
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@ -1278,6 +1278,7 @@ INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
SCROLLBAR_INFO *infoPtr; SCROLLBAR_INFO *infoPtr;
UINT new_flags; UINT new_flags;
BOOL bChangeParams = FALSE; /* don't show/hide scrollbar if params don't change */
*action = 0; *action = 0;
@ -1303,6 +1304,7 @@ INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
{ {
infoPtr->Page = info->nPage; infoPtr->Page = info->nPage;
*action |= SA_SSI_REFRESH; *action |= SA_SSI_REFRESH;
bChangeParams = TRUE;
} }
} }
@ -1327,15 +1329,17 @@ INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
{ {
infoPtr->MinVal = 0; infoPtr->MinVal = 0;
infoPtr->MaxVal = 0; infoPtr->MaxVal = 0;
bChangeParams = TRUE;
} }
else else
{ {
if( infoPtr->MinVal != info->nMin || if( infoPtr->MinVal != info->nMin ||
infoPtr->MaxVal != info->nMax ) infoPtr->MaxVal != info->nMax )
{ {
*action |= SA_SSI_REFRESH; *action |= SA_SSI_REFRESH;
infoPtr->MinVal = info->nMin; infoPtr->MinVal = info->nMin;
infoPtr->MaxVal = info->nMax; infoPtr->MaxVal = info->nMax;
bChangeParams = TRUE;
} }
} }
} }
@ -1375,7 +1379,7 @@ INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
new_flags = ESB_DISABLE_BOTH; new_flags = ESB_DISABLE_BOTH;
*action |= SA_SSI_REFRESH; *action |= SA_SSI_REFRESH;
} }
else if (nBar != SB_CTL) else if ((nBar != SB_CTL) && bChangeParams)
{ {
*action = SA_SSI_HIDE; *action = SA_SSI_HIDE;
goto done; goto done;
@ -1384,7 +1388,7 @@ INT SCROLL_SetScrollInfo( HWND hwnd, INT nBar,
else /* Show and enable scroll-bar */ else /* Show and enable scroll-bar */
{ {
new_flags = 0; new_flags = 0;
if (nBar != SB_CTL) if ((nBar != SB_CTL) && bChangeParams)
*action |= SA_SSI_SHOW; *action |= SA_SSI_SHOW;
} }