UINT GetHorizontalExtent( ) const;
Return Value
The scrollable width of the list-box portion of the combo box, in pixels.
Remarks
Retrieves from the combo box the width in pixels by which the list-box portion of the combo box can be scrolled horizontally. This is applicable only if the list-box portion of the combo box has a horizontal scroll bar.
Example
// The pointer to my combo box.
extern CComboBox* pmyComboBox;
// Find the longest string in the combo box.
CString str;
CSize sz;
int dx=0;
CDC* pDC = pmyComboBox->GetDC();
for (int i=0;i < pmyComboBox->GetCount();i++)
{
pmyComboBox->GetLBText( i, str );
sz = pDC->GetTextExtent(str);
if (sz.cx > dx)
dx = sz.cx;
}
pmyComboBox->ReleaseDC(pDC);
// Set the horizontal extent only if the current extent is not large enough.
if (pmyComboBox->GetHorizontalExtent() < dx)
{
pmyComboBox->SetHorizontalExtent(dx);
ASSERT(pmyComboBox->GetHorizontalExtent() == dx);
}
CComboBox Overview | Class Members | Hierarchy Chart
See Also CListBox::SetHorizontalExtent, CB_GETHORIZONTALEXTENT