WinForms cursor hidden only on one Form

问题

I have a C# application with 2 simultaneous visible forms, and I need to hide mouse cursor when it is over only on one of them. If I use Cursor.Hide() it applies the change for both of them.

回答1:

You can make a "blank" cursor, and set myForm.Cursor = blankCursor; This will make that specific form show a specific cursor, which could be completely transparent.

回答2:

You need to implement this logic by using the MouseEnter and MouseLeave events one each form something like:

    private void frm1_MouseEnter(object sender, EventArgs e)
    {
       Cursor.Hide();
    }
    private void frm1_MouseLeave(object sender, EventArgs e)
    {
       Cursor.Show();
    }

do the abobe on the form that should hide the cursor and add this to the form that should make the cursor visible:

    private void frm2_MouseEnter(object sender, EventArgs e)
    {
       Cursor.Show();
    }

回答3:

Did you try this.Cursor = Cursors.None, instead of Cursor.Hide()?

回答4:

You could use the Control.MouseEnter and Control.MouseLeave events to trigger hiding or displaying the cursor

回答5:

If you're hiding the cursor so that the user can't do anything on the form, consider using this.UseWaitCursor = true; instead.

来源：https://stackoverflow.com/questions/2471982/winforms-cursor-hidden-only-on-one-form