/// <summary>
/// 显示按钮按下处理
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void btnDisplay_Click(object sender, EventArgs e)
{
//此处需要判断文本框中是不是输入的纯整型数字
Rectangle pRectangle = new Rectangle((int)nudLeft.Value, (int)nudTop.Value, (int)(nudRight.Value - nudLeft.Value), (int)(nudBottom.Value - nudTop.Value));
IntPtr pBoxInfo = IntPtr.Zero;
pBoxInfo = Marshal.AllocHGlobal(Marshal.SizeOf(typeof(Rectangle)));//分配固定的指定大小的内存空间
if (pBoxInfo != IntPtr.Zero)
{
Marshal.StructureToPtr(pRectangle, pBoxInfo, true);
}
DHPlay.DHSetDisplayRegion(DisplayRegionPort, RegionSN, pBoxInfo, this.picDisplayMain.Handle, true);
}
/// <summary>
/// 关闭窗口的处理
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void frmDisplayRegion_FormClosing(object sender, FormClosingEventArgs e)
{
//此操作不做下次打开画面时会有问题,不做此操作不能正确显示
DHPlay.DHSetDisplayRegion(DisplayRegionPort, RegionSN, IntPtr.Zero, this.picDisplayMain.Handle, false);
}