+ return m_children.Item( index )->GetData()->IsShown();
+}
+
+
+//---------------------------------------------------------------------------
+// wxGridSizer
+//---------------------------------------------------------------------------
+
+wxGridSizer::wxGridSizer( int cols, int vgap, int hgap )
+ : m_rows( cols == 0 ? 1 : 0 ),
+ m_cols( cols ),
+ m_vgap( vgap ),
+ m_hgap( hgap )
+{
+ wxASSERT(cols >= 0);
+}
+
+wxGridSizer::wxGridSizer( int cols, const wxSize& gap )
+ : m_rows( cols == 0 ? 1 : 0 ),
+ m_cols( cols ),
+ m_vgap( gap.GetHeight() ),
+ m_hgap( gap.GetWidth() )
+{
+ wxASSERT(cols >= 0);
+}
+
+wxGridSizer::wxGridSizer( int rows, int cols, int vgap, int hgap )
+ : m_rows( rows || cols ? rows : 1 ),
+ m_cols( cols ),
+ m_vgap( vgap ),
+ m_hgap( hgap )
+{
+ wxASSERT(rows >= 0 && cols >= 0);
+}
+
+wxGridSizer::wxGridSizer( int rows, int cols, const wxSize& gap )
+ : m_rows( rows || cols ? rows : 1 ),
+ m_cols( cols ),
+ m_vgap( gap.GetHeight() ),
+ m_hgap( gap.GetWidth() )
+{
+ wxASSERT(rows >= 0 && cols >= 0);
+}
+
+wxSizerItem *wxGridSizer::DoInsert(size_t index, wxSizerItem *item)
+{
+ // if only the number of columns or the number of rows is specified for a
+ // sizer, arbitrarily many items can be added to it but if both of them are
+ // fixed, then the sizer can't have more than that many items -- check for
+ // this here to ensure that we detect errors as soon as possible
+ if ( m_cols && m_rows )
+ {
+ const int nitems = m_children.GetCount();
+ if ( nitems == m_cols*m_rows )
+ {
+ wxFAIL_MSG(
+ wxString::Format(
+ "too many items (%d > %d*%d) in grid sizer (maybe you "
+ "should omit the number of either rows or columns?)",
+ nitems + 1, m_cols, m_rows)
+ );
+
+ // additionally, continuing to use the specified number of columns
+ // and rows is not a good idea as callers of CalcRowsCols() expect
+ // that all sizer items can fit into m_cols-/m_rows-sized arrays
+ // which is not the case if there are too many items and results in
+ // crashes, so let it compute the number of rows automatically by
+ // forgetting the (wrong) number of rows specified (this also has a
+ // nice side effect of giving only one assert even if there are
+ // many more items than allowed in this sizer)
+ m_rows = 0;
projects / wxWidgets.git / blobdiff