当子PictureBox更改图像时，c#调整父控件的大小 [英] c# Resize parent control when a child pictureBox changes the Image

问题描述

我有一个UserControl，其中包含一个PictureBox和一个Label.控件在不同事件(例如onMouseEnter，OnMouseLeave)中在PictureBox中加载三个不同的图像.由于图像可以具有不同的大小，因此我无需调整pictureBox的大小， 控件本身.下面提供了控件的OnPaint事件，但这不起作用.

I have a UserControl that contains a PictureBox and a Label. The Control loads three different images in PictureBox on different events (fore example onMouseEnter, OnMouseLeave). As the images can have different sizes, I neet to resize the pictureBox and the control itself. Below is provided the control's OnPaint event but this does not work.

    protected override void OnPaint(PaintEventArgs pe)
    {

        if (pictureBox.Image != null)
        {
            this.Width = this.pictureBox.Image.Size.Width;
            this.Height = this.pictureBox.Image.Size.Height;
            CutRoundedRectangle2(pictureBox, cornerRadius);
        }
        else
        {
            Bitmap DrawArea = new Bitmap(pictureBox.Size.Width, pictureBox.Size.Height);
            Graphics g = Graphics.FromImage(DrawArea);
            Pen mypen = new Pen(Color.Black);
            pictureBox.Image = DrawArea;
            System.Drawing.Pen pen = new Pen(new SolidBrush(this.ForeColor));
            g.DrawRectangle(pen, 0, 0, this.Width-1, this.Height-1);
            g.Dispose();
        }
        this.labelText.ocation = new Point((this.pictureBox.Width - this.labelText.Width) / 2,
                                            (this.pictureBox.Height - this.labelText.Height) / 2);
        base.OnPaint(pe);
    }

pictureBox SizeMode在控件的构造函数中设置:

The pictureBox SizeMode is set in control's constuctor:

this.pictureBox.SizeMode = PictureBoxSizeMode.AutoSize;

推荐答案

@ Alexey，pictureBox调整大小事件很有帮助！

@Alexey, the pictureBox resize event helped!

    private void pictureBox_Resize(object sender, EventArgs e)
    {
        this.Width = this.pictureBox.Image.Size.Width;
        this.Height = this.pictureBox.Image.Size.Height;
    }

这篇关于当子PictureBox更改图像时，c#调整父控件的大小的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！