C#怎么实现窗体换肤

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效果

代码

public partial class FORM1 : Form{    public Form1()    {        InitializeComponent();    }    public static int var_bar = 1;    private void barter(int n)    {        switch (n)        {            case 1:            {                this.Width = Properties.Resources.sy1_01.Width;                this.Height = Properties.Resources.sy1_01.Height + Properties.Resources.sy1_02.Height - 5;                panel_Title.BackgroundImage = Properties.Resources.sy1_01;                panel_ALL.BackgroundImage = Properties.Resources.sy1_02;                pictureBox_Min.Image = null;                pictureBox_Min.Image = Properties.Resources.sy1_04;                pictureBox_Max.Image = null;                pictureBox_Max.Image = Properties.Resources.sy1_05;                pictureBox_Close.Image = null;                pictureBox_Close.Image = Properties.Resources.sy1_03;                var_bar = 1;                break;            }            case 2:            {                this.Width = Properties.Resources.sy2_01.Width;                this.Height = Properties.Resources.sy2_01.Height + Properties.Resources.sy2_02.Height - 5;                panel_Title.BackgroundImage = Properties.Resources.sy2_01;                panel_ALL.BackgroundImage = Properties.Resources.sy2_02;                pictureBox_Min.Image = null;                pictureBox_Min.Image = Properties.Resources.sy2_04;                pictureBox_Max.Image = null;                pictureBox_Max.Image = Properties.Resources.sy2_05;                pictureBox_Close.Image = null;                pictureBox_Close.Image = Properties.Resources.sy2_03;                var_bar = 2;                break;            }            case 3:            {                this.Width = Properties.Resources.sy3_01.Width;                this.Height = Properties.Resources.sy3_01.Height + Properties.Resources.sy3_02.Height - 5;                panel_Title.BackgroundImage = Properties.Resources.sy3_01;                panel_ALL.BackgroundImage = Properties.Resources.sy3_02;                pictureBox_Min.Image = null;                pictureBox_Min.Image = Properties.Resources.sy3_04;                pictureBox_Max.Image = null;                pictureBox_Max.Image = Properties.Resources.sy3_05;                pictureBox_Close.Image = null;                pictureBox_Close.Image = Properties.Resources.sy3_03;                var_bar = 3;                break;            }        }        barterShow(n);    }    private void barterShow(int n)    {        ToolS_1.Checked = false;        ToolS_2.Checked = false;        ToolS_3.Checked = false;        switch (n)        {            case 1:                ToolS_1.Checked = true;                break;            case 2:                ToolS_2.Checked = true;                break;            case 3:                ToolS_3.Checked = true;                break;        }    }    private void Form1_Load(object sender, EventArgs e)    {        barter(1);    }    #region 设置窗体的最大化、最小化和关闭按钮的单击事件    /// <summary>    /// 设置窗体的最大化、最小化和关闭按钮的单击事件    /// </summary>    /// <param Frm_Tem="Form">窗体</param>    /// <param n="int">标识</param>    public void FrmClickMeans(Form Frm_Tem, int n)    {        switch (n)        {            case 0:                Frm_Tem.windowstate = FormWindowState.Minimized;                break;            case 1:            {                if (Frm_Tem.WindowState == FormWindowState.Maximized)                    Frm_Tem.WindowState = FormWindowState.Normal;                else                    Frm_Tem.WindowState = FormWindowState.Maximized;                break;            }            case 2:                Frm_Tem.Close();                break;        }    }    #endregion    #region 控制图片的切换状态    /// <summary>    /// 控制图片的切换状态    /// </summary>    /// <param Frm_Tem="Form">要改变图片的对象</param>    /// <param n="int">标识</param>    /// <param ns="int">移出移入标识</param>    public static PictureBox Tem_PictB = new PictureBox();    public void ImageSwitch(object sender, int n, int ns)    {        Tem_PictB = (PictureBox) sender;        switch (n)        {            case 0:            {                Tem_PictB.Image = null;                if (ns == 0)                {                    switch (var_bar)                    {                        case 1:                            Tem_PictB.Image = Properties.Resources.sy1_04_1;                            break;                        case 2:                            Tem_PictB.Image = Properties.Resources.sy2_04_1;                            break;                        case 3:                            Tem_PictB.Image = Properties.Resources.sy3_04_1;                            break;                    }                }                if (ns == 1)                {                    switch (var_bar)                    {                        case 1:                            Tem_PictB.Image = Properties.Resources.sy1_04;                            break;                        case 2:                            Tem_PictB.Image = Properties.Resources.sy2_04;                            break;                        case 3:                            Tem_PictB.Image = Properties.Resources.sy3_04;                            break;                    }                }                break;            }            case 1:            {                Tem_PictB.Image = null;                if (ns == 0)                {                    switch (var_bar)                    {                        case 1:                            Tem_PictB.Image = Properties.Resources.sy1_05_1;                            break;                        case 2:                            Tem_PictB.Image = Properties.Resources.sy2_05_1;                            break;                        case 3:                            Tem_PictB.Image = Properties.Resources.sy3_05_1;                            break;                    }                }                if (ns == 1)                {                    switch (var_bar)                    {                        case 1:                            Tem_PictB.Image = Properties.Resources.sy1_05;                            break;                        case 2:                            Tem_PictB.Image = Properties.Resources.sy2_05;                            break;                        case 3:                            Tem_PictB.Image = Properties.Resources.sy3_05;                            break;                    }                }                break;            }            case 2:            {                Tem_PictB.Image = null;                if (ns == 0)                {                    switch (var_bar)                    {                        case 1:                            Tem_PictB.Image = Properties.Resources.sy1_03_1;                            break;                        case 2:                            Tem_PictB.Image = Properties.Resources.sy2_03_1;                            break;                        case 3:                            Tem_PictB.Image = Properties.Resources.sy3_03_1;                            break;                    }                }                if (ns == 1)                {                    switch (var_bar)                    {                        case 1:                            Tem_PictB.Image = Properties.Resources.sy1_03;                            break;                        case 2:                            Tem_PictB.Image = Properties.Resources.sy2_03;                            break;                        case 3:                            Tem_PictB.Image = Properties.Resources.sy3_03;                            break;                    }                }                break;            }        }    }    #endregion    private void pictureBox_Close_Click(object sender, EventArgs e)    {        FrmClickMeans(this, Convert.ToInt16(((PictureBox) sender).Tag.ToString()));    }    private void pictureBox_Close_MouseEnter(object sender, EventArgs e)    {        ImageSwitch(sender, Convert.ToInt16(((PictureBox) sender).Tag.ToString()), 0);    }    private void pictureBox_Close_MouseLeave(object sender, EventArgs e)    {        ImageSwitch(sender, Convert.ToInt16(((PictureBox) sender).Tag.ToString()), 1);    }    private void ToolS_1_Click(object sender, EventArgs e)    {        barter(Convert.ToInt32(((ToolStripMenuItem) sender).Tag));    }}

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