关于WPF使用ToolSettingsHost控件附加到MicroStation ToolSetings之后显示器高分辨率缩放显示问题及解决方案

Offline Aki Hou over 2 years ago

先添加一个用户控件

打开 UserControl1.xaml 文件把控件类型 UserControl 改为 : ToolSettingsHost

添加一个按钮作为内容显示

<wpf:ToolSettingsHost x:Class="TestAddin.UserControl1"
                  xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
                  xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
                  xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
                  xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
                  xmlns:wpf="clr-namespace:Bentley.MstnPlatformNET.WPF;assembly=Bentley.MicroStation.WPF"
                  mc:Ignorable="d" 
                  Width="300" Height="150">
    <Grid>
            <Button Content="点击" VerticalAlignment="Center" Padding="10,5,10,5"></Button>
    </Grid>
</wpf:ToolSettingsHost>

打开 UserControl1.xaml.cs 把UserControl1 的继承类 UserControl 也改为: ToolSettingsHost

using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using Bentley.MstnPlatformNET.WPF;

namespace TestAddin
{
    /// <summary>
    /// UserControl1.xaml 的交互逻辑
    /// </summary>
    public partial class UserControl1 : ToolSettingsHost
    {
        public UserControl1()
        {
            InitializeComponent();
        }
    }
}

创建控件实列

UserControl1 userControl1=new UserControl1();
userControl1.Attach(addin);

使用ToolSettingsHost 附加到 MicroStation 之后效果为

因为我的显示器分辨率缩放值为125%,1.25倍窗口(MSWindow)进行缩放, 所以实际窗口的大小为原有控件的宽高除以1.25倍;

导致控件内容(ElementHost)大小(宽,高)大于窗口(MSWindow)大小(宽,高),所以显示内容不全; 那么只要修正ElementHost 大小跟窗口大小为一致就行了;

解决方案:

修改 UserControl1.xaml.cs 内容为:

/// <summary>
    /// UserControl1.xaml 的交互逻辑
    /// </summary>
    public partial class UserControl1 : ToolSettingsHost
    {
        public UserControl1()
        {
            InitializeComponent();
        }

        [DllImport("stdmdlbltin.dll", SetLastError = true)]
        public static extern int mdlNativeWindow_getToolSettingsWindow(out IntPtr windowPp);


        [DllImport("nativewindow.dll", SetLastError = true)]
        public static extern int mdlNativeWindow_setSize(IntPtr windowP, int width, int height);




        public override void Attach(IMatchLifetime addIn)
        {
            //   AdjustWidthAndHeight();

            base.Attach(addIn);

            //   ElementHost.Width = (int)RenderSize.Width;
            //  ElementHost.Height = (int)RenderSize.Height;
            ToolSettingsUtil.SetToolSettingsWindowSize(ElementHost.Width, ElementHost.Height);
        }



        /// <summary>
        /// 根据缩放比重新调整控件大小
        /// </summary>
        public new void AdjustWidthAndHeight()
        {
            double dipScale = GetDipScale();
            Width *= dipScale;
            Height *= dipScale;
        }


        /// <summary>
        /// 获取显示器缩放比
        /// </summary>
        /// <returns></returns>
        public double GetDipScale()
        {
            Graphics g = Graphics.FromHwnd(IntPtr.Zero);
            double dipScale = 1;
            switch (g.DpiX)
            {
                case 96: dipScale = 1; break;
                case 120: dipScale = 1.25; break;
                case 144: dipScale = 1.5; break;
                case 168: dipScale = 1.75; break;
                case 192: dipScale = 2; break;
            }

            return dipScale;

        }
    }

方法1:ElementHost 跟随窗口(MSWindow)保持统一但是不考虑原控件缩放的问题实际会跟设定大小不一样

public override void Attach(IMatchLifetime addIn)
{
    base.Attach(addIn);
    ElementHost.Width = (int)RenderSize.Width;
    ElementHost.Height = (int)RenderSize.Height;
}

方法2:ElementHost 跟随窗口(MSWindow)保持统一,考虑原控件大小先乘以一个缩放比 Attach 之后会自动减去之前乘以的缩放比结果会保持原控件大小但是检测系统显示器缩放比的方法是否绝对可靠有待考证

public override void Attach(IMatchLifetime addIn)
{

    AdjustWidthAndHeight();
    base.Attach(addIn);
    ElementHost.Width = (int)RenderSize.Width;
    ElementHost.Height = (int)RenderSize.Height;
 
}

方法3:Attach之后直接再次修改窗口(MSWindow) 的大小保持原有大小这里进行了 CLR函数封装

public override void Attach(IMatchLifetime addIn)
{
    base.Attach(addIn);
    ToolSettingsUtil.SetToolSettingsWindowSize(ElementHost.Width, ElementHost.Height);
 
}

// ClR 封装函数 
void  ToolSettingsUtil::SetToolSettingsWindowSize(int width,int height)
{
    MSWindow* MSWPtr;
    mdlNativeWindow_getToolSettingsWindow(&MSWPtr);
    mdlNativeWindow_setSize(MSWPtr,width,height);
}

方法4:同方法3,不需要封装使用P/Invoke方式调用但是声明 mdlNativeWindow_setSize() 编译报错,有会的希望指点一下

(由郭老师指出问题所在函数封装在 nativewindow.dll 中) 推荐使用此方法

 public override void Attach(IMatchLifetime addIn)
{
    base.Attach(addIn);
    mdlNativeWindow_getToolSettingsWindow(out IntPtr windowPp);
    mdlNativeWindow_setSize(windowPp, ElementHost.Width, ElementHost.Height);
}

最终效果图: