// //这是捕捉鼠标滚动事件 //public void Panel_MouseWheel(object sender, MouseEventArgs e) //{ // float addsd=0; // if (e.Delta > 0) // addsd -= 0.1f; // else // addsd += 0.1f; // if (addsd >= 3) // addsd = 3; // if (addsd <= 1) // addsd = 1f; // toolStripStatusLabel2.Text = addsd.ToString(); //} private void 新建估价项目ToolStripMenuItem_Click(object sender, EventArgs e) { //if (!isExist("Xinjian")) //{ // Xinjian xinjian = new Xinjian(); // xinjian.MdiParent = this; // xinjian.Show(); //} Form f = Application.OpenForms["Xinjian"]; //查找是否打开过Form1窗体 if (f == null) //没打开过 { Xinjian xinjian = new Xinjian(); xinjian.MdiParent = this; xinjian.Show(); } else { f.Focus(); //打开过就让其获得焦点 } }