如何判断是那个控件被双击？

[xy16]

程序如下：

TLabel *lbl[5];
lbl[0] = new TLabel(frmMain);
lbl[1] = new TLabel(frmMain);
lbl[0]->OnDblClick = MemoDblClick;
lbl[1]->OnDblClick = MemoDblClick;

void __fastcall TfrmMain::MemoDblClick(TObject *Sender)
{
//TODO: Add your source code here
请问这里如何知道鼠标双击的是lbl[0]还是lbl[1]???????????????
请问这里如何知道鼠标双击的是lbl[0]还是lbl[1]???????????????
请问这里如何知道鼠标双击的是lbl[0]还是lbl[1]???????????????
}

[空中猎手]

程序如下：

TLabel *lbl[5];
lbl[0] = new TLabel(frmMain);
lbl[1] = new TLabel(frmMain);
lbl[0]->OnDblClick = MemoDblClick;
lbl[0]->Tag = 0;
lbl[1]->OnDblClick = MemoDblClick;
lbl[1]->Tag = 1;

void __fastcall TfrmMain::MemoDblClick(TObject *Sender)
{
//TODO: Add your source code here
TLabel *label = dynamic_cast<TLabel *>(Sender);
if(NULL != label)
{
switch(label->Tag)
{
case 0:
//lal[0]
break;
case 1:
//lal[1]
break;
}
}
}

[rainfall19831109]

根据Sender参数判断...

[samchoy]

同意rainfall19831109(恩恩)

TLabel *lbl[5];
lbl[0] = new TLabel(frmMain);
lbl[1] = new TLabel(frmMain);
lbl[0]->OnDblClick = MemoDblClick;
lbl[1]->OnDblClick = MemoDblClick;

void __fastcall TfrmMain::MemoDblClick(TObject *Sender)
{
if (Sender == lbl[0])
// 鼠标双击的是lbl[0]
else if (Sender == lbl[1])
// 鼠标双击的是lbl[1]
else if ...
}