README.md

Unity-WindowsNative-Plugin

为本人的Unity游戏项目编写的Windows C++原生插件，仅对外作为参考用途，因此不提供完整的C#端代码，请自行参考下方文档

IDE

• Visual Studio 2022 Community

功能介绍、C#示例

Desktop.cpp Windows桌面相关功能

---

bool ShowDialog(const wchar_t* title, const wchar_t* message, int iconType, int buttonType)

显示对话框

//该代码示例仅在unsafe上下文中可用

using System.Runtime.InteropServices;

const string DllName = "UnityWindowsNativePlugin.dll";

[DllImport(DllName)]
static extern bool ShowDialog(char* title, char* message, int iconType, int buttonType);

// 可选择对话框中的图标
public enum IconType
{
    None = 0,
    Hand,
    Question,
    Exclamation,
    Asterisk,
    Warning,
    Information,
    Error,
    Stop,
};

// 可选择对话框下方的按钮
public enum ButtonType
{
    YesNo = 0,
    Ok,
    OkCancel,
};

public static bool ShowDialog(string title, string message, IconType iconType = IconType.Warning, ButtonType buttonType = ButtonType.Ok)
{
    message = message.Replace("\\n", "\n");
    fixed (char* titlePtr = title)
    {
        fixed (char* messagePtr = message)
        {
            return ShowDialog(titlePtr, messagePtr, (int)iconType, (int)buttonType);
        }
    }
}

---

const wchar_t* GetWindowTitle()

获取当前窗口标题

void SetWindowTitle(const wchar_t* title)

更改窗口标题

void ReleaseWindowTitlePtr()

用于释放 GetWindowTitle() 调用时动态创建的字符串（无需手动调用，每次调用 GetWindowTitle() 时会自动释放一次）

//该代码示例仅在unsafe上下文中可用

using System.Runtime.InteropServices;

const string DllName = "UnityWindowsNativePlugin.dll";
[DllImport(DllName)] static extern void SetWindowTitle(char* title);
[DllImport(DllName)] static extern char* GetWindowTitle();
[DllImport(DllName)] static extern void ReleaseWindowTitlePtr();

public static string GameWindowTitle
{
    get
    {
        var titlePtr = GetWindowTitle();        //调用C++代码返回一个窗口标题字符串指针
        if(titlePtr == null)                    //判断指针是否为空
            return string.Empty;
        var title = new string(titlePtr);       //将字符串指针转换为C#的string
        ReleaseWindowTitlePtr();                //释放C++动态分配的指针
        return title;
    }
    set
    {
        var title = value ?? string.Empty;

        fixed (char* titlePtr = title)
        {
            SetWindowTitle(titlePtr);
        }
    }
}

---

void GetCursorPosition(int* pixelX, int* pixelY)

获取当前鼠标像素位置（左上原点）

using System.Runtime.InteropServices;

//引入DLL以及函数
[DllImport("UnityWindowsNativePlugin.dll")]
public static extern void GetCursorPosition(ref int pixelX, ref int pixelY);

void PrintCursorPosition()
{
	int x = 0;
	int y = 0;

	//传入int指针到C++对应的方法中
	GetCursorPosition(ref x, ref y);

	//调用GetCursorPosition之后x和y会被修改为当前光标位置
	Debug.Log("Cursor position: " + x + ", " + y);
}

void SetCursorPosition(int pixelX, int pixelY)

设置当前鼠标像素位置（左上原点）

using System.Runtime.InteropServices;

//引入DLL以及函数
[DllImport("UnityWindowsNativePlugin.dll")]
public static extern void SetCursorPosition(int pixelX, int pixelY);

void SetCursorPosition()
{
	int x = 50;
	int y = 50;
	SetCursorPosition(x, y);
}