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WM_SETREDRAW should repaint the listbox when set to on if something 

has been changed.
This commit is contained in:
Gerard Patel 2000-06-15 00:07:20 +00:00 committed by Alexandre Julliard
parent 2f158c2678
commit 41b07fb4d9
1 changed files with 25 additions and 3 deletions
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28
controls/listbox.c
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@ -41,6 +41,9 @@ DECLARE_DEBUG_CHANNEL(combo);
/* Listbox system timer id */
#define LB_TIMER_ID 2
/* flag listbox changed while setredraw false - internal style */
#define LBS_DISPLAYCHANGED 0x80000000
/* Item structure */
typedef struct
{
@ -569,6 +572,16 @@ static void LISTBOX_SetRedraw( WND *wnd, LB_DESCR *descr, BOOL on )
{
if (!(descr->style & LBS_NOREDRAW)) return;
descr->style &= ~LBS_NOREDRAW;
if (descr->style & LBS_DISPLAYCHANGED)
{ /* page was changed while setredraw false, refresh automatically */
InvalidateRect(wnd->hwndSelf, NULL, TRUE);
if ((descr->top_item + descr->page_size) > descr->nb_items)
{ /* reset top of page if less than number of items/page */
descr->top_item = descr->nb_items - descr->page_size;
if (descr->top_item < 0) descr->top_item = 0;
}
descr->style &= ~LBS_DISPLAYCHANGED;
}
LISTBOX_UpdateScroll( wnd, descr );
}
else descr->style |= LBS_NOREDRAW;
@ -589,8 +602,12 @@ static void LISTBOX_RepaintItem( WND *wnd, LB_DESCR *descr, INT index,
HBRUSH hbrush, oldBrush = 0;
/* Do not repaint the item if the item is not visible */
if ((descr->style & LBS_NOREDRAW) || !IsWindowVisible(wnd->hwndSelf)) return;
if (!IsWindowVisible(wnd->hwndSelf)) return;
if (descr->style & LBS_NOREDRAW)
{
descr->style |= LBS_DISPLAYCHANGED;
return;
}
if (LISTBOX_GetItemRect( wnd, descr, index, &rect ) != 1) return;
if (!(hdc = GetDCEx( wnd->hwndSelf, 0, DCX_CACHE ))) return;
if (descr->font) oldFont = SelectObject( hdc, descr->font );
@ -1017,6 +1034,11 @@ static void LISTBOX_InvalidateItems( WND *wnd, LB_DESCR *descr, INT index )
if (LISTBOX_GetItemRect( wnd, descr, index, &rect ) == 1)
{
if (descr->style & LBS_NOREDRAW)
{
descr->style |= LBS_DISPLAYCHANGED;
return;
}
rect.bottom = descr->height;
InvalidateRect( wnd->hwndSelf, &rect, TRUE );
if (descr->style & LBS_MULTICOLUMN)
@ -2765,7 +2787,7 @@ static inline LRESULT WINAPI ListBoxWndProc_locked( WND* wnd, UINT msg,
case WM_SYSTIMER:
return LISTBOX_HandleSystemTimer( wnd, descr );
case WM_ERASEBKGND:
if (IS_OWNERDRAW(descr))
if ((IS_OWNERDRAW(descr)) && !(descr->style & LBS_DISPLAYCHANGED))
{
RECT rect;
HBRUSH hbrush = SendMessageA( descr->owner, WM_CTLCOLORLISTBOX,