Question

简单的东西。该应用程序将12个不同单元格中的12个GIF随机放入TableLayoutPanel中。所有都是隐藏的，但是如果你点击它们，它们就会出现。

如果我将可见性从开头设置为true，它们会显示出来，但一旦隐藏，无论如何，它们都不会重新出现。有什么想法吗？

搜索高低，但没有成功。

提前致谢

public partial class Form1 : Form
{

    // Use this Random object to choose random icons for the squares
    Random random = new Random();

    // Create timer int 
    private int counter = 0;

    // Each of these letters is an interesting icon 
    // in the Webdings font, 
    // and each icon appears twice in this list
    List<string> pictures = new List<string>() 
    { 
        "images/baneling.gif",
        "images/baneling.gif",
        "images/scv.gif",
        "images/scv.gif",
        "images/marine.gif",
        "images/marine.gif",
        "images/probe.gif",
        "images/probe.gif",
        "images/zealot.gif",
        "images/zealot.gif",
        "images/zergling.gif",
        "images/zergling.gif"
    };


    // firstClicked points to the first Label control  
    // that the player clicks, but it will be null  
    // if the player hasn't clicked a label yet
    PictureBox firstClicked = null;

    // secondClicked points to the second Label control  
    // that the player clicks
    PictureBox secondClicked = null;

    public Form1()
    {
        InitializeComponent();
        AssignPicturesToSquares();
    }

    /// <summary> 
    /// Assign each icon from the list of icons to a random square 
    /// </summary> 
    private void AssignPicturesToSquares()
    {
        // The TableLayoutPanel has 16 labels, 
        // and the icon list has 16 icons, 
        // so an icon is pulled at random from the list 
        // and added to each label 
        foreach (Control control in tableLayoutPanel1.Controls)
        {
            PictureBox currentPicture = control as PictureBox;
            if (currentPicture != null)
            {
                int randomNumber = random.Next(pictures.Count);
                currentPicture.Image = Image.FromFile(pictures[randomNumber]);
                currentPicture.Visible = true; // hide images after generation
                pictures.RemoveAt(randomNumber);
            }
        }
    }

    private void Form1_Load(object sender, EventArgs e)
    {

    }

    private void picture_Click(object sender, EventArgs e)
    {
        if (timer1.Enabled == true)
            return;

        PictureBox clickedPicture = sender as PictureBox;

        clickedPicture.Visible = true;

        if (clickedPicture != null)
        {
            if (clickedPicture.Visible == true)
                return;

            if (firstClicked == null)
            {
                firstClicked = clickedPicture;
                firstClicked.Visible = true;
                return;
            }

            secondClicked = clickedPicture;
            secondClicked.Visible = true;

            // Check to see if the player won
            CheckForWinner();

            if (firstClicked.Text == secondClicked.Text)
            {
                firstClicked = null;
                secondClicked = null;
                return;
            }

            timer1.Start();

        }
    }

    /// <summary> 
    /// This timer is started when the player clicks  
    /// two icons that don't match, 
    /// so it counts three quarters of a second  
    /// and then turns itself off and hides both icons 
    /// </summary> 
    /// <param name="sender"></param>
    /// <param name="e"></param>
    private void timer1_Tick(object sender, EventArgs e)
    {
        // Stop the timer
        timer1.Stop();

        // Hide both icons
        firstClicked.Visible = false;
        secondClicked.Visible = false;

        // Reset firstClicked and secondClicked  
        // so the next time a label is 
        // clicked, the program knows it's the first click
        firstClicked = null;
        secondClicked = null;
    }
    /// <summary> 
    /// Check every icon to see if it is matched, by  
    /// comparing its foreground color to its background color.  
    /// If all of the icons are matched, the player wins 
    /// </summary> 
    private void CheckForWinner()
    {
        // Go through all of the labels in the TableLayoutPanel,  
        // checking each one to see if its icon is matched 
        foreach (Control control in tableLayoutPanel1.Controls)
        {
            PictureBox currentPicture = control as PictureBox;

            if (currentPicture != null)
            {
                if (currentPicture.Visible == false)
                    return;
            }
        }

        // If the loop didn’t return, it didn't find 
        // any unmatched icons 
        // That means the user won. Show a message and close the form
        MessageBox.Show("You matched all the pictures in just " + counter + " seconds!","Congratulations");
        Close();
    }

    private void timer2_Tick(object sender, EventArgs e)
    {
        counter++;
    }

    private void tableLayoutPanel1_Paint(object sender, PaintEventArgs e)
    {

    }

Answer 1

您无法单击不可见的控件。鼠标事件转到TLP。因此，为其MouseClick事件实现一个处理程序以找回控件。像这样：

private void tableLayoutPanel1_MouseClick(object sender, MouseEventArgs e) {
    foreach (Control ctl in tableLayoutPanel1.Controls) {
        if (ctl.Bounds.Contains(e.Location)) {
            ctl.Visible = true;
            break;
        }
    }
}

为什么C＃PictureBox可见性很少见效？

1 个答案: