private void lblFindPwd_MouseEnter(object sender, EventArgs e){lblFindPwd.ForeColor = Color.Black;}private void lblFindPwd_MouseLeave(object sender, EventArgs e){lblFindPwd.ForeColor = Color.FromArgb(166, 166, 166);}②private void Panel1_MouseEnter(object sender, EventArgs e){panel1.BackColor = Color.LightGray;}private void Panel1_MouseLeave(object sender, EventArgs e){panel1.BackColor = SystemColors.Control;}private void Panel2_MouseEnter(object sender, EventArgs e){panel2.BackColor = Color.LightGray;}private void Panel2_MouseLeave(object sender, EventArgs e){panel2.BackColor = SystemColors.Control;}}
}
//代码与设计器颜色要一致，如果改为精确，别忘了把设计器中的背景颜色BackColor也改为精确值/*   private void pnlPwd_MouseEnter(object sender, EventArgs e){pnlPwd.BackColor = Color.FromArgb(193,193,193);}private void pnlPwd_MouseLeave(object sender, EventArgs e){pnlPwd.BackColor = Color.FromArgb(229, 229, 229);}*/private void pnlPwd_MouseEnter(object sender, EventArgs e){pnlPwd.BackColor = Color.FromArgb(193,193,193);}private void pnlPwd_MouseLeave(object sender, EventArgs e){pnlPwd.BackColor = Color.FromArgb(229, 229, 229);}private void txtPwd_TextChanged(object sender, EventArgs e){pnlPwd.BackColor = Color.FromArgb(18, 183, 245);}private void picProfilePhoto_MouseEnter(object sender, EventArgs e){timer1.Enabled = true;  //F10, ---单步调试，F5： 继续执行，  FN + F10}private void timer1_Tick(object sender, EventArgs e){//100mspicMultiUserLogin.Location = new Point(picMultiUserLogin.Location.X + 10,picMultiUserLogin.Location.Y);}//多头像加号移除
//整个移动过程，也可以用两个timer实现，这里运用if语句bool isMoveRight;public const int MOVE_STEP = 10;private void picProfilePhoto_MouseEnter(object sender, EventArgs e)//头像{timer1.Enabled = true;  //F10, ---单步调试，F5： 继续执行，  FN + F10isMoveRight = true;}private void picProfilePhoto_MouseLeave(object sender, EventArgs e){isMoveRight = false;}//100ms, 执行private void timer1_Tick(object sender, EventArgs e){if ((isMoveRight && picMultiUserLogin.Location.X <= 245)   //右|| (!isMoveRight && picMultiUserLogin.Location.X >= 200)) //左{//100msif (isMoveRight){picMultiUserLogin.Location = new Point(picMultiUserLogin.Location.X + MOVE_STEP,picMultiUserLogin.Location.Y  //头像加号);}else{picMultiUserLogin.Location = new Point(picMultiUserLogin.Location.X - MOVE_STEP,picMultiUserLogin.Location.Y);}}}