从网上搜到 可以通过反射ImageRectangle 属性获取picturebox中sizemode=zoom之后显示的大小,
public Rectangle GetPictureBoxZoomSize(PictureBox p_PictureBox)
{
if (p_PictureBox != null)
{
PropertyInfo _ImageRectanglePropert = p_PictureBox.GetType().GetProperty("ImageRectangle", BindingFlags.Instance | BindingFlags.NonPublic);
return (Rectangle)_ImageRectanglePropert.GetValue(p_PictureBox, null);
}
return new Rectangle(0, 0, 0, 0);
}
稍加几行代码就实现了 鼠标点击图片框中图片真实坐标的显示
private void pictureBox1_MouseClick(object sender, MouseEventArgs e)
{
Bitmap bmp = (Bitmap )pictureBox1.Image;
Rectangle rect=GetPictureBoxZoomSize(pictureBox1);
int deltX = (pictureBox1.Width - rect.Width)/2;
int deltY = (pictureBox1.Height - rect.Height)/2;
int x = (e.X - deltX) * bmp.Width / rect.Width ;
int y = (e.Y - deltY) * bmp.Height / rect.Height;
label1.Text = x.ToString() + " " + y.ToString();
}
按比例进行的计算,可能会稍微偏离一个像素