[feature request] 高DPI适应

[Dobby233Liu]

我是高dpi用户，所以就用windows自带缩放，一缩放程序就糊。最近才发现是程序没有自适应dpi.

所以，首先就得在应用清单里表示适应：

要使用 DPIAware，只需在你的工程创建一个应用清单文件，在</asmebbly>前面添加代码：

 <asmv3:application>
   <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
     <dpiAware>true</dpiAware>
   </asmv3:windowsSettings>
 </asmv3:application>

文档： https://docs.microsoft.com/en-us/dotnet/framework/winforms/high-dpi-support-in-windows-forms https://www.cnblogs.com/maybreath/p/4225986.html

综合成一个清单文件：

<?xml version="1.0" encoding="UTF-8" standalone="yes"?>

<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0" xmlns:asmv3="urn:schemas-microsoft-com:asm.v3" >
  <trustInfo xmlns="urn:schemas-microsoft-com:asm.v2">
    <security>
      <requestedPrivileges xmlns="urn:schemas-microsoft-com:asm.v3">
        <requestedExecutionLevel level="asInvoker" uiAccess="false"/>
      </requestedPrivileges>
    </security>
  </trustInfo>
 <asmv3:application>
   <asmv3:windowsSettings xmlns="http://schemas.microsoft.com/SMI/2005/WindowsSettings">
     <dpiAware>true</dpiAware>
   </asmv3:windowsSettings>
 </asmv3:application>
  <dependency>
    <dependentAssembly>
        <assemblyIdentity
            type="win32"
            name="Microsoft.Windows.Common-Controls"
            version="6.0.0.0"
            processorArchitecture="*"
            publicKeyToken="6595b64144ccf1df"
            language="*"
        />
    </dependentAssembly>
  </dependency>
 <compatibility xmlns="urn:schemas-microsoft-com:compatibility.v1">
   <application>
        <!--This Id value indicates the application supports Windows Vista functionality -->
          <supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/> 
        <!--This Id value indicates the application supports Windows 7 functionality-->
          <supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
        <!--This Id value indicates the application supports Windows 8 functionality-->
          <supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
        <!--This Id value indicates the application supports Windows 8.1 functionality-->
          <supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
     <!-- 这样子才可以自动适应 -->
     <supportedOS Id="{8e0f7a12-bfb3-4fe8-b9a5-48fd50a15a9a}" />
   </application>
 </compatibility>
</assembly>

EDIT: 但是添加后会变成这个样子，所以代码里也得手动感应（？）

[OkayJim]

高DPI缩放下截屏扫码功能根本不能覆盖到全屏幕，如图：