55 lines
1.3 KiB
C#
55 lines
1.3 KiB
C#
using System;
|
|
using System.ComponentModel;
|
|
using System.Drawing;
|
|
using System.Windows.Forms;
|
|
|
|
namespace JinYuan.ControlLib.UCHelper
|
|
{
|
|
/// <summary>
|
|
/// 系统缩放比例
|
|
/// </summary>
|
|
public class DpiHelper
|
|
{
|
|
#region 公开方法
|
|
|
|
/// <summary>
|
|
/// 获取控件对应的系统缩放比例
|
|
/// </summary>
|
|
/// <param name="control"></param>
|
|
/// <returns></returns>
|
|
public static float GetControlDpi(Control control)
|
|
{
|
|
IntPtr hDC = IntPtr.Zero;
|
|
Graphics g = null;
|
|
ControlHelper.GetWindowClientGraphics(control.Handle, out g, out hDC);
|
|
|
|
float dpi = g.DpiX / 96f;
|
|
|
|
g.Dispose();
|
|
NativeMethods.ReleaseDC(control.Handle, hDC);
|
|
|
|
return dpi;
|
|
}
|
|
|
|
/// <summary>
|
|
/// 获取控件对应的系统缩放比例
|
|
/// </summary>
|
|
/// <param name="hWnd"></param>
|
|
/// <returns></returns>
|
|
public static float GetControlDpi(IntPtr hWnd)
|
|
{
|
|
IntPtr hDC = IntPtr.Zero;
|
|
Graphics g = null;
|
|
ControlHelper.GetWindowClientGraphics(hWnd, out g, out hDC);
|
|
|
|
float dpi = g.DpiX / 96f;
|
|
|
|
g.Dispose();
|
|
NativeMethods.ReleaseDC(hWnd, hDC);
|
|
|
|
return dpi;
|
|
}
|
|
#endregion
|
|
}
|
|
}
|