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Posted 28 Apr 2006


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Use the Free USkin Toolkit to Skin your Application

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3.39/5 (51 votes)
10 Nov 2008CPOL4 min read
USkin provides a free library and tools to developers for easily adding skins to their software UI.

The current version (V3.0 beta) does not need skinbuilder, the next version will provide one.

Sample Image


As we know, Windows XP adds support for themes for applications. When we change the Windows theme, all the Windows standard applications change into the same theme. How can we add skin support to our own software and make our software different from others? Here, I suggest a way: use the USkin toolkit.

Why USkin?

  1. Saves your development time. You don't have to care too much about your software UI. After finishing your functions, add three lines of code to support a skin. It's very easy, and will save you time.
  2. Makes your app look and feel good:), that's it.
  3. Supports color themes. This can make a skin file look like a 100 different skins. Save your UI design time.
  4. USkin provides a free version. Save your money!
  5. Free powerful SkinStudio included that you can use to design your own skin file.

Image 2

USkin Features

  • Supports more than 20 Windows standard controls
  • Supports system standard dialogs, such as file dialogs, color dialogs, print dialogs
  • Supports custom defined controls/third party controls
  • Supports WYSIWYG style skin file editing
  • Supports MDI/SDI/Dialog style apps
  • Supports window blinds skin file importing. More than 10000 skin files can be used
  • Supports color themes
  • Supports VC/SDK/VB/.NET, no language limitations
  • Supports multithreading
  • Supports changing skin at runtime
  • Supports all popup menus, including the edit control context menu!
  • Only two lines required to add skin support
  • Supports all scrollbar skins
  • Small skin file size, around 30 KB

Using the Code

Using USkin functions is very easy. Let's begin.

First, include the USkin.h file in your app:

#include "uskin.h"

Then, in the InitInstance function, call USkinInit to initiate the USkin library:

BOOL CSDIApp::InitInstance()


    if (!AfxOleInit())
        return FALSE;
    // Init USkin lib and load media skin file
    SetRegistryKey(_T("Local App"));

    CSingleDocTemplate* pDocTemplate;
    pDocTemplate = new CSingleDocTemplate(
    if (!pDocTemplate)
        return FALSE;

    TCHAR sz[500];

    CCommandLineInfo cmdInfo;

    if (!ProcessShellCommand(cmdInfo))
        return FALSE;


    //if you want do your own subclass,call USkinInit here

    return TRUE;

In the end, call USkinExit before your app exits:

int CSDIApp::ExitInstance()
    return CWinApp::ExitInstance();

Using the Code in .NET

The sample code is in C#. You can easily change to other .NET languages. OK, let's begin. First add USkinSDK.cs to your project. Then in the Main entry, add one line of code like this:

//First Declare a skin object
	static void Main()
        USkinSDK.USkinInit("", "", "..\\Skins\\DiyGreen.msstyles");
		Application.Run(new Form1());

For skinning the Button (GroupBox, CheckBox, RadioButton) object correctly, you need to change the FlatStyle property into System.

The resulting screen will look like this:

Image 3

Points of Interest

This article does not focus on the technical side of the implementation. If you want to know how it works, you can try these CodeProject articles:


  • Updates in version 3.0 beta [2008-11-10]
    • New render engine. I rewrote the core render engine such that it is faster, of high quality, and safer.
    • Added Microsoft Window's Theme file format (*.msstyles) support. The user does not need to convert or edit the skin file. There are many skin files to use.
    • Added Multi-Monitor support.
    • Fixed USkin2.2 known bugs.
    • Removed custom draw functions in this version because it was using the Microsoft theme file.
  • Updates in version 2.2 [2006-08-07]
    • Fixed the menubar update error.
    • Added the USkinUpdateMenuBar function. When the user modifies the menu by USkinGetMenu, the user should call USkinUpdateMenuBar to update the menubar.
    • Added RightToLeft text support.
    • Added Winamp like player sample.
    • USkin file format compatible.
    • Enhanced the SkinBuilder.
    • Added SkinBuilder Help document.
    • Added multilanguage support to SkinBuilder.
    • Enhanced ScrollBar control.
  • Updates in version 2.1
    • Fixed the MultiLine style in Button/CheckBox/RadioBox.
    • Added .NET skin support. Now you can use USkin with your .NET applications!
    • Added a new library called USkinCom. Easy for .NET use.
    • Added two C# samples. One is MDI, the other is SDI. You can see the power of USkin in these samples.
    • Added color replace feature. Now, you can replace standard system colors.
    • Enhanced the USkinApplyColorTheme function. Everything will change when calling the USkinApplyColorTheme function.
    • Added the USkinDrawFrameControl function to replace the standard DrawFrameControl.
    • Added six skin files to the pack. All skin files are carefully edited.
    • Enhanced many functions.

Special Thanks

  • Thanks to The Code Project for providing a good platform for developers
  • Thanks to you guys who use uskin
  • Thanks AlecJames - He found a multi-monitor bug. Sorry man, I took a long time to make v3.0


This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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Comments and Discussions

QuestionUSkin for x64 Pin
alucard_2429-Mar-22 5:21
Memberalucard_2429-Mar-22 5:21 
QuestionSkin文件夹里并没有文件? Pin
Member 132997558-Jul-17 3:20
MemberMember 132997558-Jul-17 3:20 
QuestionI need Unicode dll and library.. Pin
EasyYeoung28-Apr-16 22:00
professionalEasyYeoung28-Apr-16 22:00 
QuestionFailing partly on win7 build with 2015/DiyGreen.msstyles is missing (TEST YOUR STUFF BEFORE GIVING AWAY!!!) Pin
stephan.petzchen10-Nov-15 8:01
Memberstephan.petzchen10-Nov-15 8:01 
GeneralMy vote of 1 Pin
Fabio Vianello14-Mar-14 3:55
MemberFabio Vianello14-Mar-14 3:55 
QuestionUSkinDemo - Skin changes not applying to vs 2010 Pin
ranjithkumar8123-Feb-14 20:16
Memberranjithkumar8123-Feb-14 20:16 
AnswerRe: USkinDemo - Skin changes not applying to vs 2010 Pin
thirdwolf24-Feb-14 0:42
Memberthirdwolf24-Feb-14 0:42 
AnswerRe: USkinDemo - Skin changes not applying to vs 2010 Pin
thirdwolf24-Feb-14 0:47
Memberthirdwolf24-Feb-14 0:47 
QuestionDetory the message loop Pin
tang100071-Aug-12 15:26
Membertang100071-Aug-12 15:26 
GeneralMy vote of 1 Pin
osirisgothra8-Jan-12 18:46
Memberosirisgothra8-Jan-12 18:46 
QuestionShell Style .msstyles Pin
quike60411-Nov-11 15:51
Memberquike60411-Nov-11 15:51 
GeneralMy vote of 1 Pin
haily_lee30-Oct-11 22:43
Memberhaily_lee30-Oct-11 22:43 
GeneralRe: My vote of 1 Pin
osirisgothra8-Jan-12 18:41
Memberosirisgothra8-Jan-12 18:41 
GeneralWhy Chinese? Pin
Michael Estwik12-May-11 23:57
MemberMichael Estwik12-May-11 23:57 
BugRe: Why Chinese? Pin
Axel Steiner2-Aug-15 14:18
MemberAxel Steiner2-Aug-15 14:18 
GeneralGood article! Do you have a C# version of it? Pin
TheRomanian18-Apr-11 5:11
MemberTheRomanian18-Apr-11 5:11 
Questionwhere can I get the source code of the uskin? and how much it is? Pin
Member 3898746-Apr-11 19:21
MemberMember 3898746-Apr-11 19:21 
GeneralMy vote of 3 Pin
cdinten1-Mar-11 23:20
Membercdinten1-Mar-11 23:20 
GeneralUnicode error with button, check box and radio box Pin
forzamilan13-Sep-10 17:55
Memberforzamilan13-Sep-10 17:55 
GeneralGarbage in Demo-Source Pin
optimal-process.de7-Jun-10 9:36
Memberoptimal-process.de7-Jun-10 9:36 
GeneralOdd characters in the sdinet/form1 source Pin
BlackDogSpark8-Nov-09 7:59
MemberBlackDogSpark8-Nov-09 7:59 
GeneralUSkinGetMenu always return NULL Pin
raymond_zeng200017-Sep-09 5:46
Memberraymond_zeng200017-Sep-09 5:46 
Generalrebar menu bug? [modified] Pin
zenithfree16-Sep-09 6:41
Memberzenithfree16-Sep-09 6:41 
Generalmdichild form controls's are not themed Pin
N3CAT115-Sep-09 5:08
MemberN3CAT115-Sep-09 5:08 
GeneralWierd problem with dll injector and skin Pin
mark2991-Sep-09 1:57
Membermark2991-Sep-09 1:57 

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