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don't use invalid item indices in wxLC_HRULES-drawing code (closes #10484)

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git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@58812 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
This commit is contained in:
Vadim Zeitlin 2009-02-09 13:41:25 +00:00
parent 8d6e8e45fe
commit 99366b91eb
1 changed files with 8 additions and 8 deletions
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16
src/msw/listctrl.cpp
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@ -2847,10 +2847,11 @@ WXLPARAM wxListCtrl::OnCustomDraw(WXLPARAM lParam)
// Necessary for drawing hrules and vrules, if specified
void wxListCtrl::OnPaint(wxPaintEvent& event)
{
const int itemCount = GetItemCount();
const bool drawHRules = HasFlag(wxLC_HRULES);
const bool drawVRules = HasFlag(wxLC_VRULES);
if (!InReportView() || !(drawHRules || drawVRules))
if (!InReportView() || !(drawHRules || drawVRules) || !itemCount)
{
event.Skip();
return;
@ -2870,12 +2871,10 @@ void wxListCtrl::OnPaint(wxPaintEvent& event)
wxSize clientSize = GetClientSize();
wxRect itemRect;
int itemCount = GetItemCount();
int i;
if (drawHRules)
{
long top = GetTopItem();
for (i = top; i < top + GetCountPerPage() + 1; i++)
const long top = GetTopItem();
for ( int i = top; i < top + GetCountPerPage() + 1; i++ )
{
if (GetItemRect(i, itemRect))
{
@ -2889,17 +2888,18 @@ void wxListCtrl::OnPaint(wxPaintEvent& event)
{
cy = itemRect.GetBottom();
dc.DrawLine(0, cy, clientSize.x, cy);
break;
}
}
}
}
i = itemCount - 1;
if (drawVRules && (i > -1))
if (drawVRules)
{
wxRect firstItemRect;
GetItemRect(0, firstItemRect);
if (GetItemRect(i, itemRect))
if (GetItemRect(itemCount - 1, itemRect))
{
// this is a fix for bug 673394: erase the pixels which we would
// otherwise leave on the screen