private void button5_Click(object sender, EventArgs e)
{
Rect rect = new Rect
{
left = 50,
top = 50,
right = 110,
bottom = 110
};
bool result = Win32API.AdjustWindowRectEx(ref rect, WndStyle.WS_CAPTION | WndStyle.WS_BORDER | WndStyle.WS_SYSMENU, false,
WndExStyle.WS_EX_CLIENTEDGE);
}