c# - 带有图标和复选框的 ToolStripControlHost。如何突出显示所选项目？在图标字段中添加图标？

Question

我想创建 Custom ToolStripItem，其中包含 checkbox 和 Icon。我设法通过使用两个 picturebox 和标签创建自定义控件来做到这一点。左边的 picturebox 如果是图标，右边的是作为特殊的 checkbox 将位置添加到收藏夹。

我将该控件添加到 ToolStripControlHost。

1. 问题是左右两边的空白，我不想删除它们或将图标移到左侧栏并删除右侧的空白。我尝试将 Padding 和 Margin 值设置为 0，但它不起作用。我发现有类似问题的帖子，但没有正确答案。有可能吗？？

1. 我想像 ToolStripMenuItem 中的普通元素一样在 MouseEnter 上突出显示整行。当我覆盖 OnMouseEnter 和 OnMouseLeave 更改背景属性时，它只是更改托管控件的颜色，而不是 antirie ToolStripControlHost。是否可以模拟与 ToolStripMenuItem 相同的行为？

现在它看起来像图片“A”，我希望它看起来更像图片 B，但带有星形复选框:

基本上我想让我的 CustomToolStrip 项目尽可能类似于 ToolStripMenuItem。 Click(如果您单击文本) 和 ChackChange(如果您单击星号)

具有单独的事件

任何想法如何做到这一点？

这是我的 ToolStripControlHost 代码的一部分:

    private void AddEvents()
    {
        this.ToolStripICItemControl.eMouseEnter += new EventHandler(On_MouseEnter);
        this.ToolStripICItemControl.eMouseLeave += new EventHandler(On_MouseLeave);
    }
    private void AutoSizeControl(Control control, int textPadding)
    {
        // Create a Graphics object for the Control.
        Graphics g = control.CreateGraphics();

        // Get the Size needed to accommodate the formatted Text.
        Size preferredSize = g.MeasureString(
           control.Text, control.Font).ToSize();

        // Pad the text and resize the control.
        this.Size = new Size(
           preferredSize.Width + 5 + 50 + (textPadding * 2),
           this.Size.Height /*+ (textPadding * 2)*/ );

        // Clean up the Graphics object.
        g.Dispose();
    }
    protected override void OnPaint(PaintEventArgs e)
    {
        base.OnPaint(e);
    }
    protected override void OnSubscribeControlEvents(Control c)
    {
        // Call the base so the base events are connected. 
        base.OnSubscribeControlEvents(c);

        // Cast the control to a  ToolStripCheckBox control.
        ToolStripImageAndCheckBox checkBoxToolStrip = (ToolStripImageAndCheckBox)c;

        // Add the event.
        checkBoxToolStrip.LabelClick += new EventHandler(checkBoxToolStrip_LabelClick);
        checkBoxToolStrip.CheckedChanged += new EventHandler(checkBoxToolStrip_CheckedChanged);
    }
    protected override void OnUnsubscribeControlEvents(Control c)
    {
        // Call the base method so the basic events are unsubscribed. 
        base.OnUnsubscribeControlEvents(c);

        // Cast the control to a ToolStripCheckBox control.
        ToolStripImageAndCheckBox checkBoxToolStrip = (ToolStripImageAndCheckBox)c;

        // Remove the event.
        checkBoxToolStrip.LabelClick -= new EventHandler(checkBoxToolStrip_LabelClick);
    }
    protected override void OnMouseEnter(EventArgs e)
    {
        DefaultBackColor = this.BackColor;
        base.OnMouseEnter(e);
        this.BackColor = Color.Aquamarine;
    }
    protected override void OnMouseLeave(EventArgs e)
    {
        base.OnMouseLeave(e);
        this.BackColor = DefaultBackColor;
    }
    void checkBoxToolStrip_LabelClick(object sender, EventArgs e)
    {
        if (Click != null)
            Click(this, e);
    }
    void checkBoxToolStrip_CheckedChanged(object sender, EventArgs e)
    {
        if (CheckedChange != null)
            CheckedChange(this, e);
    }
    void On_MouseLeave(object sender, EventArgs e)
    {
        OnMouseLeave(e);
        //throw new NotImplementedException();
    }
    void On_MouseEnter(object sender, EventArgs e)
    {
        this.Select();
        this.Focus();
        OnMouseEnter(e);
    }

Answer 1

我设法通过从 ToolStripMenuItem 驱动 MyControl 并覆盖 onPaint 方法来做我需要的事情

public class MyControl : ToolStripMenuItem
{
    public MyControl(){}
    public MyControl(string text, Image image ):base (text,image){}
    public MyControl(string text):base(text){}
    public MyControl(Image image):base(image){}
    public MyControl(string text,Image image,EventHandler onClick):base(text,image,onClick){}
    public MyControl(string text, Image image,int id):base(text,image){  this.ID = id;}
    public MyControl(string text,Image image,int id,EventHandler onClick):base(text,image,onClick){this.ID = id; }

    protected override void OnPaint(PaintEventArgs e)
    {
        base.OnPaint(e);

        if (base.Checked == false)
        {
           Rectangle rect = new Rectangle(this.Width - 20, 1, 20, 20);               
            e.Graphics.DrawImage(Properties.Resources.BlackStar, rect);
        }
        else
        { 
            Rectangle rect = new Rectangle(this.Width - 20, 1, 20, 20);
            e.Graphics.DrawImage(Properties.Resources.YellowStar, rect);
        }
    }
    public int ID { get; set; }
    public bool StarClicked { get; set; }

    protected override void OnMouseDown(MouseEventArgs e)
    {            
        StarClicked = e.X > (this.Width - 20);
        if (StarClicked)
        {
            this.Checked = this.Checked == true ? false : true;
        }
        else
            base.OnClick(e);
        base.OnMouseDown(e);
    }

现在是这样

表单代码:

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
        AddMenuElements(7);
    }
    public void AddMenuElements(int licznik)
    {
        ToolStripMenuItem wszystkie = new ToolStripMenuItem("wszystkie", SystemIcons.Question.ToBitmap());
        manu1ToolStripMenuItem.DropDownItems.Add(wszystkie);
        menuStrip1.Renderer = new ToolStripSystemRenderer();
        for (int i = 0; i < licznik; i++)
        {
            ToolStripMenuItem element = new ToolStripMenuItem(String.Format("element {0}", i), GetIcon(i),element2_Click);
            element.Visible = i % 2 == 0 ? false:true;                
            manu1ToolStripMenuItem.DropDownItems.Add(element);
        }


        for (int i = 0; i < licznik; i++)
        {
            MyControl element2 = new MyControl(String.Format("element {0}",i), GetIcon(i),element2_Click);
            element2.ID = i;
            element2.CheckedChanged += (s, e) =>
            {                    
                MyControl control = s as MyControl;
                manu1ToolStripMenuItem.DropDownItems[control.ID + 1].Visible = control.Checked;                  
            };
            element2.Checked = i % 2 == 0 ? false : true;

            wszystkie.DropDownItems.Add(element2); 

        }
    }
    void element2_Click(object sender, EventArgs e)
    {
        MyControl kontener = (sender as MyControl);

        if (kontener.ForeColor == Color.Red)
            kontener.ForeColor = Color.Black;
        else
            kontener.ForeColor = Color.Red;

    }
    private static Image GetIcon(int i)
    {
        Image ikona = null;
        switch (i)
        {
            case 0: ikona = SystemIcons.Application.ToBitmap();
                break;
            case 1: ikona = SystemIcons.Asterisk.ToBitmap();
                break;
            case 2: ikona = SystemIcons.WinLogo.ToBitmap();
                break;
            case 3: ikona = SystemIcons.Exclamation.ToBitmap();
                break;
            case 4: ikona = SystemIcons.Hand.ToBitmap();
                break;
            case 5: ikona = SystemIcons.Warning.ToBitmap();
                break;
            default: ikona = SystemIcons.Shield.ToBitmap();
                break;
        }
        return ikona;
    }   
}

基本上它完成了我想要的，我只需要在点击星号时阻止它消失。感谢@LarsTech 的帮助，它给了我如何做到这一点的提示。