我正在使用此代码创建一个变焦镜头，在我的电脑上工作正常，但当我尝试我的程序在笔记本电脑（不是1080p屏幕）上运行时，它无法正常工作 .
这个镜头做的是显示图像的一部分，鼠标悬停的部分，以方形放大 . 但是在其他计算机上它没有显示鼠标所在的部分，缩放部分显示远离鼠标指针 .
我应该怎么做这个代码工作在其他计算机上的决议？
public partial class FormLens : Form
{
PictureBox pictureBox1 = new PictureBox(); // Have a picture box
int zoom = 4; // Variable for zoom value
Bitmap printscreen;
Timer timer = new Timer();
public FormLens()
{
InitializeComponent();
pictureBox1.Dock = DockStyle.Fill; // Occupy the full area of the form
pictureBox1.BorderStyle = BorderStyle.FixedSingle; // Have a single border of clear representation
Controls.Add(pictureBox1); // Add the control to the form
FormBorderStyle = FormBorderStyle.None; // Make the form borderless to make it as lens look
timer.Interval = 100; // Set the interval for the timer
timer.Tick += timer_Tick; // Hool the event to perform desire action
timer.Start(); //Start the timer
printscreen = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height); // Have a bitmap to store the image of the screen
}
void timer_Tick(object sender, EventArgs e)
{
var graphics = Graphics.FromImage(printscreen as Image); // Get the image of the captured screen
graphics.CopyFromScreen(0, 0, 0, 0, printscreen.Size); // Get the copy of screen
var position = Cursor.Position; // Get the position of cursor
var lensbmp = new Bitmap(50, 50); // Have a bitmap for lens
var i = 0; // Variable for row count
var j = 0; // Variable for column count
for (int row = position.X - 25; row < position.X + 25; row++) // Indicates row number
{
j = 0; // Set column value '0' for new column
for (int column = position.Y - 25; column < position.Y + 25; column++) // Indicate column number
{
try
{
lensbmp.SetPixel(i, j, printscreen.GetPixel(row, column)); // Place current region pixel to lens bitmap
j++; // Increase row count
}
catch
{
timer.Stop();
timer.Dispose();
this.Close();
//MessageBox.Show("Lente for dos limites da tela");
break;
}
}
i++; // Increase column count
}
this.pictureBox1.Image = new Bitmap(lensbmp, lensbmp.Width * zoom, lensbmp.Height * zoom); // Assign lens bitmap with zoom level to the picture box
Size = pictureBox1.Image.Size; // Assign optimal value to the form
Left = position.X + 25; // Place form nearer to cursor X value
Top = position.Y + 25; // Place form nearer to cursor Y value
TopMost = true; // Keep the form top level
}
// Override OnKeyDown for zoom in and zoom out actions
protected override void OnKeyDown(KeyEventArgs e)
{
if (e.KeyValue == 73) // Set "i" as the key for Zoom In.
zoom++; // Increase zoom by 1 item greater
else if (e.KeyValue == 79) // Set "o" as the key for Zoom Out
zoom--; // Decrease zoom by 1 item smaller
else if (e.KeyValue == 27) // Set "Esc" to close the magnifier
{
timer.Stop();
timer.Dispose();
this.Close(); // Close the form
Dispose(); // Dispose the form
}
base.OnKeyDown(e);
}
}