在Picturebox上添加标签

Question

我试图在我的图片框上写一些文字,所以我认为最简单和最好的事情是在它上面绘制标签.这就是我做的:

PB = new PictureBox();
PB.Image = Properties.Resources.Image; 
PB.BackColor = Color.Transparent;
PB.SizeMode = System.Windows.Forms.PictureBoxSizeMode.StretchImage;
PB.Size = new System.Drawing.Size(120, 30);
PB.Location = new System.Drawing.Point(100, 100);
lblPB.Parent = PB;
lblPB.BackColor = Color.Transparent;
lblPB.Text = "Text";
Controls.AddRange(new System.Windows.Forms.Control[] { this.PB });

我得到没有PictureBoxes的空白页面.我究竟做错了什么？

Answer 1

虽然所有这些答案都有效,但您应该考虑选择更清洁的解决方案.您可以改为使用图片框的Paint活动:

PB = new PictureBox();
PB.Paint += new PaintEventHandler((sender, e) =>
{
    e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.AntiAlias;
    e.Graphics.DrawString("Text", Font, Brushes.Black, 0, 0);
});
//... rest of your code

编辑以中心绘制文本:

PB.Paint += new PaintEventHandler((sender, e) =>
{
    e.Graphics.TextRenderingHint = System.Drawing.Text.TextRenderingHint.ClearTypeGridFit;

    string text = "Text";

    SizeF textSize = e.Graphics.MeasureString(text, Font);
    PointF locationToDraw = new PointF();
    locationToDraw.X = (PB.Width / 2) - (textSize.Width / 2);
    locationToDraw.Y = (PB.Height / 2) - (textSize.Height / 2);

    e.Graphics.DrawString(text, Font, Brushes.Black, locationToDraw);
});

Answer 2

代替

lblPB.Parent = PB;

做

PB.Controls.Add(lblPB);