Question

如何为右键单击和左键单击保留两个不同的事件？我想zoomIn左键单击和zoomOut右键单击如果有任何错误或错误请帮助我，我已按以下方式编写代码

我的意思是每次右键单击以及左键单击有两个不同的功能或事件这是我的计划

 private void pictureBox1_MouseClick_1(object sender, MouseEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Right )
        {
            double zoomLevel = 1.1;
            System.Drawing.Rectangle screenSize = new System.Drawing.Rectangle();

            screenSize.Width = SystemInformation.VirtualScreen.Width ;
            screenSize.Height = SystemInformation.VirtualScreen.Height;

            //int zoomFactor = 10;

            Image img = pictureBox1.Image;
            Bitmap bitMapImg = new Bitmap(img);


            if (bitMapImg.Width < screenSize.Width && bitMapImg.Height < screenSize.Height)
            {
                Size newSize = new Size((int)(bitMapImg.Width / zoomLevel), (int)(bitMapImg.Height / zoomLevel));
                Bitmap bmp = new Bitmap(bitMapImg, newSize);

                pictureBox1.Image = (Image)bmp;
                pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
            }
        }
    }

    private void pictureBox1_Click(object sender, EventArgs e)
    {

            double zoomLevel = 1.1;
            System.Drawing.Rectangle screenSize = new System.Drawing.Rectangle();

            screenSize.Width = SystemInformation.VirtualScreen.Width * 10;
            screenSize.Height = SystemInformation.VirtualScreen.Height * 10;

            //int zoomFactor = 10;

            Image img = pictureBox1.Image;
            Bitmap bitMapImg = new Bitmap(img);


            if (bitMapImg.Width < screenSize.Width && bitMapImg.Height < screenSize.Height)
            {
                Size newSize = new Size((int)(bitMapImg.Width * zoomLevel), (int)(bitMapImg.Height * zoomLevel));
                Bitmap bmp = new Bitmap(bitMapImg, newSize);

                pictureBox1.Image = (Image)bmp;
                pictureBox1.SizeMode = PictureBoxSizeMode.CenterImage;
            }

    }

Answer 1

你最好的选择是一个事件处理程序和一个开关：

switch(e.Button) {
    case whatever.Left: LeftMouseClick(e); break;
    case whatever.Right: RightMouseClick(e); break;
}

Answer 2

仅使用一个事件处理程序pictureBox1_Click并使用if语句来决定要执行的操作：

private void pictureBox1_MouseClick_1(object sender, MouseEventArgs e)
{
    if (e.Button == System.Windows.Forms.MouseButtons.Right )
    {
       DoRightClickStuff();
    }
    else if (e.Button == System.Windows.Forms.MouseButtons.Left )
    {
        DoLeftClickStuff();
    }
 }

Answer 3

您必须使用MouseUp或MouseDown事件代替。{ Click event抓取right click。

试试这个

    private void pictureBox1_MouseUp(object sender, MouseEventArgs e)
    {
        if (e.Button == System.Windows.Forms.MouseButtons.Left)
        {
            MessageBox.Show("Left");
        }
        if (e.Button == System.Windows.Forms.MouseButtons.Right)
        {
            MessageBox.Show("Right");
        }    
    }

左右点击的不同功能

3 个答案: