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Subject |
Author |
Date |
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Darlene Gariepy
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Jan 19, 2012 - 11:01 AM
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CExtTreeCtrl::TreeItemRectsGet in ExtControlsCommon.cpp has a bug where the pRectCheckBox parameter may not be set under certain conditions.
Existing Code:
if( _TII.m_eCheckBoxType != e_cbt_none )
{
INT nCheckBoxWidth = OnTreeItemCalcCheckBoxAreaWidth();
rcCheckBox.right += nCheckBoxWidth;
if( pRectCheckBox != NULL )
(*pRectCheckBox) = rcCheckBox;
}
Modified Code:
if( _TII.m_eCheckBoxType != e_cbt_none )
{
INT nCheckBoxWidth = OnTreeItemCalcCheckBoxAreaWidth();
rcCheckBox.right += nCheckBoxWidth;
if( pRectCheckBox != NULL )
(*pRectCheckBox) = rcCheckBox;
} else {
if( pRectCheckBox != NULL )
(*pRectCheckBox) = CRect (0, 0, 0, 0);
}
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Technical Support
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Jan 24, 2012 - 4:03 AM
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Thank you for this issue report. We think it’s better to initialize all the non-NULL rectangles nearly beginning of the CExtTreeCtrl::TreeItemRectsGet() method:
if( pRectEntire != NULL )
pRectEntire->SetRect( 0, 0, 0, 0 );
if( pRectLinesArea != NULL )
pRectLinesArea->SetRect( 0, 0, 0, 0 );
if( pRectExpandCollapseButton != NULL )
pRectExpandCollapseButton->SetRect( 0, 0, 0, 0 );
if( pRectCheckBox != NULL )
pRectCheckBox->SetRect( 0, 0, 0, 0 );
if( pRectIcon != NULL )
pRectIcon->SetRect( 0, 0, 0, 0 );
if( pRectLabel != NULL )
pRectLabel->SetRect( 0, 0, 0, 0 );
if( pRectControl != NULL )
pRectControl->SetRect( 0, 0, 0, 0 );
if( pRectRightPart != NULL )
pRectRightPart->SetRect( 0, 0, 0, 0 );
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