private void checkBoxFullscreen_CheckedChanged(object sender, EventArgs e)
{
if (this.checkBoxFullscreen.Checked)
{
gMapControl.Location = new Point(0, 0);
gMapControl.Width = this.Width - 35;
}
else
{
gMapControl.Location = new Point(136, 0);
gMapControl.Width = this.Width - 170;
}
}