c# absolute position of control on screen

问题

I'm trying to get the absolute position of a control on the screen. I'm using two monitors and the results aren't really that great...

What I'm doing is opening another form to capture an image, then passing this image to the main form and closing the capture form. I then want the main form to appear in the same place the picture was captured. To get a gist of what I'm trying to do as an example, open Snipping Tool on Windows and capture a snip. The window will then appear in the place that the image was taken.

This is the current code I am using to do this:

Location = new Point(Cursor.Position.X - CaptureBox.Width - CapturePanel.Location.X - CaptureBox.Location.X - 8, Cursor.Position.Y - CaptureBox.Height - CapturePanel.Location.Y - CaptureBox.Location.Y - 30);

CapturePanel contains the CaptureBox control which stores the picture. I'm also taking 8 from the X location and 30 from te Y location to compensate for the form's border and title bar, but the only problem with this is that some computers will be using a different window style, and these numbers will change.

If there is a method that can be used to grab the border and title width/height of windows, that would be great.

EDIT

A solution to this would be:

Location = new Point(
    Cursor.Position.X -
    CaptureBox.Width -
    CapturePanel.Location.X -
    CaptureBox.Location.X - 
    SystemInformation.HorizontalResizeBorderThickness,
    Cursor.Position.Y -
    CaptureBox.Height -
    CapturePanel.Location.Y -
    CaptureBox.Location.Y -
    SystemInformation.CaptionHeight -
    SystemInformation.VerticalResizeBorderThickness
);

With help from King King pointing out SystemInformation to me.

回答1:

To get the Height of your Window caption, you can try this:

int captionHeight = yourForm.PointToScreen(Point.Empty).Y - yourForm.Top;

To get the Width of the form border, you can try this:

int borderWidth = yourForm.PointToScreen(Point.Empty).X - yourForm.Left;

Also you may want to look at the default caption height by SystemInformation.CaptionHeight.

If you want to get the location of the CaptureBox in screen coordinates, you can use the PointToScreen method:

Point loc = CaptureBox.PointToScreen(Point.Empty);

来源：https://stackoverflow.com/questions/18429425/c-sharp-absolute-position-of-control-on-screen

标签

position

controls