如果工程里既有TDBGridEh和stringgrid，在写stringgrid的StringGrid1DrawCell()时会报错，怎么回事呢？

[yung]

错误如下：

E2015 Ambiguity between 'TGridDrawState' and 'Grids::TGridDrawState'

我把消息改成void __fastcall StringGrid1DrawCell(TObject *Sender, int ACol,int ARow, TRect &Rect,Grids::TGridDrawState State);

但是程序根本不响应这个函数了，怎么回事呢？

[ccrun.com]

TGridDrawState名字空间冲突问题及解决方法
http://www.ccrun.com/article.asp?i=1003&d=15f173

[yung]

__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{
StringGrid1->OnDrawCell = StringGrid1DrawCell;
StringGrid2->OnDrawCell = StringGrid2DrawCell;
}
这里报错了：
[C++ Error] audit.cpp(35): E2034 Cannot convert 'void (_fastcall * (_closure )(TObject *,int,int,TRect &,Grids::TGridDrawState))(TObject *,int,int,TRect &,Grids::TGridDrawState)' to 'void (_fastcall * (_closure )(TObject *,int,int,const TRect &,Grids::TGridDrawState))(TObject *,int,int,const TRect &,Grids::TGridDrawState)'
什么问题呢？

[ccrun.com]

StringGrid1DrawCell和StringGrid2DrawCell函数这样声明和定义：

void __fastcall StringGrid1DrawCell(TObject *Object, int X, int Y, const TRect &Rect, Grids::TGridDrawState State)
{
...
}

[ccrun.com]

或者这样：

StringGrid1->OnDrawCell = TDrawCellEvent(StringGrid1DrawCell);
StringGrid2->OnDrawCell = TDrawCellEvent(StringGrid2DrawCell);