search
HomeBackend DevelopmentC#.Net TutorialHow to implement special-shaped forms and controls using WinForm in C#

这篇文章主要介绍了C# WinForm制作异形窗体与控件的方法,结合实例形式分析了WinForm制作异形窗体与控件的原理、实现步骤与相关操作技巧,需要的朋友可以参考下

本文实例讲述了C# WinForm制作异形窗体与控件的方法。分享给大家供大家参考,具体如下:

制作异形窗体或控件的思路一般都是想办法生成一个region,然后设置给指定的窗口或控件。生成region的方法有很多,最常用的就是从一幅图片生成,把该图片中的透明色部分“抠”掉,剩下的部分作为一个region。设置窗口或控件的region可以用SetWindowRgn API,不过.NET framework封装了这个操作,在C#中只要对窗口或控件的Region属性赋值就可以了。下面我就把我在C#中实现异形窗体的核心代码贴出来给大家看看,有什么意见尽管提,别客气哦

首先,是一个根据Bitmap对象生成Region的方法:

/// <summary>
/// 取得一个图片中非透明色部分的区域。
/// </summary>
/// <param name="Picture">取其区域的图片。</param>
/// <param name="TransparentColor">透明色。</param>
/// <returns>图片中非透明色部分的区域</returns>
private Region BmpRgn(Bitmap Picture, Color TransparentColor)
{
   int nWidth = Picture.Width;
   int nHeight = Picture.Height;
   Region rgn = new Region();
   rgn.MakeEmpty();
   bool isTransRgn;//前一个点是否在透明区
   Color curColor;//当前点的颜色
   Rectangle curRect = new Rectangle();
   curRect.Height = 1;
   int x = 0, y = 0;
   //逐像素扫描这个图片,找出非透明色部分区域并合并起来。
   for(y = 0; y < nHeight; ++y)
   {
     isTransRgn = true;
     for (x = 0; x < nWidth; ++x)
     {
       curColor = Picture.GetPixel(x,y);
       if(curColor == TransparentColor || x == nWidth - 1)//如果遇到透明色或行尾
          {
            if(isTransRgn == false)//退出有效区
            {
              curRect.Width = x - curRect.X;
              rgn.Union(curRect);
            }
          }
          else//非透明色
          {
            if(isTransRgn == true)//进入有效区
            {
              curRect.X = x;
              curRect.Y = y;
            }
          }//if curColor
          isTransRgn = curColor == TransparentColor;  
       }//for x
     }//for y
     return rgn;
}

原理很简单,就是对该图片逐行扫描,在每一行中把那些非透明色的矩形(只有一个像素高)合并(union)到一个Region对象中,当扫描完整个图片,得到的也就是我们想要的Region了。这种算法在很多文章里都有介绍的。

有了region,下面就简单了:

this.Region = BmpRgn(new Bitmap("d:\\a.bmp"), Color.FromArgb(0, 0, 0));

上面的代码就是把d:\a.bmp的轮廓作为主窗口的region的,假设该图片的背景黑色(Color.FromArgb(0, 0, 0))。

其实不光是Form,任何控件都可以用这个方法设置Region,制作出异形控件。

The above is the detailed content of How to implement special-shaped forms and controls using WinForm in C#. For more information, please follow other related articles on the PHP Chinese website!

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Developing with C# .NET: A Practical Guide and ExamplesDeveloping with C# .NET: A Practical Guide and ExamplesMay 12, 2025 am 12:16 AM

C# and .NET provide powerful features and an efficient development environment. 1) C# is a modern, object-oriented programming language that combines the power of C and the simplicity of Java. 2) The .NET framework is a platform for building and running applications, supporting multiple programming languages. 3) Classes and objects in C# are the core of object-oriented programming. Classes define data and behaviors, and objects are instances of classes. 4) The garbage collection mechanism of .NET automatically manages memory to simplify the work of developers. 5) C# and .NET provide powerful file operation functions, supporting synchronous and asynchronous programming. 6) Common errors can be solved through debugger, logging and exception handling. 7) Performance optimization and best practices include using StringBuild

C# .NET: Understanding the Microsoft .NET FrameworkC# .NET: Understanding the Microsoft .NET FrameworkMay 11, 2025 am 12:17 AM

.NETFramework is a cross-language, cross-platform development platform that provides a consistent programming model and a powerful runtime environment. 1) It consists of CLR and FCL, which manages memory and threads, and FCL provides pre-built functions. 2) Examples of usage include reading files and LINQ queries. 3) Common errors involve unhandled exceptions and memory leaks, and need to be resolved using debugging tools. 4) Performance optimization can be achieved through asynchronous programming and caching, and maintaining code readability and maintainability is the key.

The Longevity of C# .NET: Reasons for its Enduring PopularityThe Longevity of C# .NET: Reasons for its Enduring PopularityMay 10, 2025 am 12:12 AM

Reasons for C#.NET to remain lasting attractive include its excellent performance, rich ecosystem, strong community support and cross-platform development capabilities. 1) Excellent performance and is suitable for enterprise-level application and game development; 2) The .NET framework provides a wide range of class libraries and tools to support a variety of development fields; 3) It has an active developer community and rich learning resources; 4) .NETCore realizes cross-platform development and expands application scenarios.

Mastering C# .NET Design Patterns: From Singleton to Dependency InjectionMastering C# .NET Design Patterns: From Singleton to Dependency InjectionMay 09, 2025 am 12:15 AM

Design patterns in C#.NET include Singleton patterns and dependency injection. 1.Singleton mode ensures that there is only one instance of the class, which is suitable for scenarios where global access points are required, but attention should be paid to thread safety and abuse issues. 2. Dependency injection improves code flexibility and testability by injecting dependencies. It is often used for constructor injection, but it is necessary to avoid excessive use to increase complexity.

C# .NET in the Modern World: Applications and IndustriesC# .NET in the Modern World: Applications and IndustriesMay 08, 2025 am 12:08 AM

C#.NET is widely used in the modern world in the fields of game development, financial services, the Internet of Things and cloud computing. 1) In game development, use C# to program through the Unity engine. 2) In the field of financial services, C#.NET is used to develop high-performance trading systems and data analysis tools. 3) In terms of IoT and cloud computing, C#.NET provides support through Azure services to develop device control logic and data processing.

C# .NET Framework vs. .NET Core/5/6: What's the Difference?C# .NET Framework vs. .NET Core/5/6: What's the Difference?May 07, 2025 am 12:06 AM

.NETFrameworkisWindows-centric,while.NETCore/5/6supportscross-platformdevelopment.1).NETFramework,since2002,isidealforWindowsapplicationsbutlimitedincross-platformcapabilities.2).NETCore,from2016,anditsevolutions(.NET5/6)offerbetterperformance,cross-

The Community of C# .NET Developers: Resources and SupportThe Community of C# .NET Developers: Resources and SupportMay 06, 2025 am 12:11 AM

The C#.NET developer community provides rich resources and support, including: 1. Microsoft's official documents, 2. Community forums such as StackOverflow and Reddit, and 3. Open source projects on GitHub. These resources help developers improve their programming skills from basic learning to advanced applications.

The C# .NET Advantage: Features, Benefits, and Use CasesThe C# .NET Advantage: Features, Benefits, and Use CasesMay 05, 2025 am 12:01 AM

The advantages of C#.NET include: 1) Language features, such as asynchronous programming simplifies development; 2) Performance and reliability, improving efficiency through JIT compilation and garbage collection mechanisms; 3) Cross-platform support, .NETCore expands application scenarios; 4) A wide range of practical applications, with outstanding performance from the Web to desktop and game development.

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Article

Hot Tools

WebStorm Mac version

WebStorm Mac version

Useful JavaScript development tools

SublimeText3 Linux new version

SublimeText3 Linux new version

SublimeText3 Linux latest version

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Atom editor mac version download

Atom editor mac version download

The most popular open source editor

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools