public void CreateBitmap(Image img)
{
if (pictureBox1.InvokeRequired)//调用和创建该控件的线程是不同的线程，必须调用Invoke方法
{
if (close)
{
return;
}
//创建该方法的委托实例
SetBitmapCallback d = new SetBitmapCallback(CreateBitmap);
//调用该委托实例，并传递参数，参数为object类型，使用this调用Invoke（this为当前窗体，是创建该窗体控件的线程）
Invoke(d, new object[] { img });//this指定创建该控件的线程来Invoke（调用）
}
else//调用与创建该控件的线程是同一个线程
{
if (img != null)
{
Bitmap bitmap = new Bitmap(img);
if (process)
{
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
int success = FaceApi.DrawFaces(bitmapData.Scan0, bitmapData.Width, bitmapData.Height, bitmapData.Stride, 3);
bitmap.UnlockBits(bitmapData);
if (pictureBox1.BackgroundImage != null)
{
pictureBox1.BackgroundImage.Dispose();
pictureBox1.BackgroundImage = null;
}
pictureBox1.BackgroundImage = bitmap;
}
else
{
if (pictureBox1.BackgroundImage != null)
{
pictureBox1.BackgroundImage.Dispose();
pictureBox1.BackgroundImage = null;
}
pictureBox1.BackgroundImage = bitmap;
}
}
else
{
if (pictureBox1.BackgroundImage != null)
{
pictureBox1.BackgroundImage.Dispose();
pictureBox1.BackgroundImage = null;
}
}
}
}
private void button2_Click(object sender, EventArgs e)
{
if (pictureBox1.BackgroundImage != null)
{
Bitmap bitmap = new Bitmap(image);
BitmapData bitmapData = bitmap.LockBits(new Rectangle(0, 0, bitmap.Width, bitmap.Height), ImageLockMode.ReadWrite, PixelFormat.Format24bppRgb);
int success = FaceApi.DrawFaces(bitmapData.Scan0, bitmapData.Width, bitmapData.Height, bitmapData.Stride, 3);
bitmap.UnlockBits(bitmapData);
if (success == 0)
{
pictureBox1.BackgroundImage.Dispose();
pictureBox1.BackgroundImage = bitmap;
}
else
{
bitmap.Dispose();
MessageBox.Show("绘制人脸失败!");
}
}
else
{
MessageBox.Show("请添加图片!");
}
}