出现error C2079: 'columns1' uses undefined class 'CColumns',高手进来看看是怎么回事?
我使用IDC_DATAGRID的控件变量设置控件列的宽度时,定义
CColumns columns1 = m_dgIncomeTypeCtrl.GetColumns();
...
..
.
(m_dgIncomeTypeCtrl是控件的变量)
出现如下错误:
error C2079: 'columns1' uses undefined class 'CColumns'
error C2440: 'initializing' : cannot convert from 'class CColumns' to 'int'
Source or target has incomplete type
而在我的类里面已经包括了 class CColumn 和class CColumns,搞了好几天没弄明白,