//定義鼠標的MouseDown事件
this.MouseDown += new MouseEventHandler(pic_MouseDown);
void pic_MouseDown(object sender, MouseEventArgs e)
{
//判斷是否是右鍵
if (e.Button==MouseButtons.Right)
{
if (this.Image == null)
{
//右鍵[2]不可用
gmnPic.Items[2].Enabled = false;
}
else
{
gmnPic.Items[2].Enabled = true;
}
}
}
this.MouseDown += new MouseEventHandler(pic_MouseDown);
void pic_MouseDown(object sender, MouseEventArgs e)
{
//判斷是否是右鍵
if (e.Button==MouseButtons.Right)
{
if (this.Image == null)
{
//右鍵[2]不可用
gmnPic.Items[2].Enabled = false;
}
else
{
gmnPic.Items[2].Enabled = true;
}
}
}