Chapter.Net.WinAPI Library

Overview

During development of the Chapter libraries, it happens easily from time to time that native WinAPI calls must be made. Thats the reason why this Chapter.Net.WinAPI library exists. Note: The Chapter.Net.WinAPI is far from complete, it contains only methods needed for any other Chapter.Net libraries and it will continue grow that way only. But of course, it it contains anything you may need in your application. Feel free to use it.

Features

• Dwmapi: Access to the WinAPI methods within the "dwmapi.dll"
• Kernel32: Access to WinAPI methods within the "kernel32.dll".
• Shell32: Access to WinAPI methods within the "shell32.dll".
• User32: Access to WinAPI methods within the "user32.dll".
• UxTheme: Access to WinAPI methods within the "uxtheme.dll".
• Data: Values and structures to use within any of those above. Like WM (WindowMessages), WH (WindowHandle) and many more.

Getting Started

1. Installation:

   • Install the Chapter.Net.WinAPI library via NuGet Package Manager:

   dotnet add package Chapter.Net.WinAPI

2. Usage:

   • Direct access the objects like

   User32.ShowWindow(windowHandle, WindowShowStyle.Restore);

   • Or a wrapper

   public class Demo
   {
       public Demo(IUser32 user32)
       {
           _user32 = user32;
       }
   
       public void RestoreWindow(Window window)
       {
           var windowHandle = ((HwndSource)PresentationSource.FromVisual(window))!.Handle;
           _user32.ShowWindow(windowHandle, WindowShowStyle.Restore);
       }
   }

Example

• Target

  public class Demo
  {
      public Demo(IUser32 user32)
      {
          _user32 = user32;
      }
  
      public void RestoreWindow(Window window)
      {
          var windowHandle = ((HwndSource)PresentationSource.FromVisual(window))!.Handle;
          _user32.ShowWindow(windowHandle, WindowShowStyle.Restore);
      }
  }

• UnitTest

  public class DemoTests
  {
      private Demo _target,
  
      [Setup]
      public void Setup()
      {
          _user32 = new Mock<IUser32>();
          _target = new Demo(_user32.Object);
      }
  
      [Test]
      public void RestoreWindow_CalledAfterMinimizedFromNormal_RestoresTheWindowBackToNormal()
      {
          var window = Utils.OpenDummyWindow();
          window.WindowState = WindowState.Normal;
  
          window.WindowState = WindowState.Minimized;
          _target.RestoreWindow(window);
  
          _user32.Verify(x => x.ShowWindow(It.IsAny<nint>(), WindowShowStyle.Restore), Times.Once());
          Assert.That(window.WindowState, Is.EqualTo(WindowState.Normal));
      }
  
      [Test]
      public void RestoreWindow_CalledAfterMinimizedFromNormal_RestoresTheWindowBackToMaximized()
      {
          var window = Utils.OpenDummyWindow();
          window.WindowState = WindowState.Maximized;
  
          window.WindowState = WindowState.Minimized;
          _target.RestoreWindow(window);
  
          _user32.Verify(x => x.ShowWindow(It.IsAny<nint>(), WindowShowStyle.Restore), Times.Once());
          Assert.That(window.WindowState, Is.EqualTo(WindowState.Maximized));
      }
  }

Links

• NuGet
• GitHub

License

Copyright (c) David Wendland. All rights reserved. Licensed under the MIT License. See LICENSE file in the project root for full license information.