How to set [NativeProperty("ScreenTimeout")] in "class Screen" of namespace UnityEngine

[qingpengchen2011]

There is a sleepTimeout property in Class Screen. I get the definition from dnSpy. But When I dump class screen with Il2Cpp class.toString(), I can't find the sleepTimeout property. My question is: How can I set this kind of field in Il2Cpp? My aim is to set the property to keep the screen from dim.

namespace UnityEngine
{
	// Token: 0x02000110 RID: 272
	[NativeHeader("Runtime/Graphics/ScreenManager.h")]
	[NativeHeader("Runtime/Graphics/GraphicsScriptBindings.h")]
	[StaticAccessor("GetScreenManager()", StaticAccessorType.Dot)]
	public sealed class Screen
	{
		// Token: 0x170001BD RID: 445
		// (get) Token: 0x060007A6 RID: 1958
		// (set) Token: 0x060007A7 RID: 1959
		[NativeProperty("ScreenTimeout")]
		public static extern int sleepTimeout { [MethodImpl(MethodImplOptions.InternalCall)] get; [MethodImpl(MethodImplOptions.InternalCall)] set; }
        }
}

[vfsfitvnm]

Read this

[qingpengchen2011]

When I dump with this.

Il2Cpp.perform(() => {
    // it will use default directory path and file name: /<default_path>/<default_name>.cs
    Il2Cpp.dump();
});

It prints.

// UnityEngine.CoreModule
class UnityEngine.Screen : System.Object
{

    static System.Int32 get_width(); // 0x00b239e0
    static System.Int32 get_height(); // 0x00b23a14
    static System.Single get_dpi(); // 0x00b23a48
    static UnityEngine.ScreenOrientation GetScreenOrientation(); // 0x00b23a7c
    static UnityEngine.ScreenOrientation get_orientation(); // 0x00b23ab0
    static UnityEngine.Resolution get_currentResolution(); // 0x00b23ae4
    static UnityEngine.FullScreenMode get_fullScreenMode(); // 0x00b23b7c
    static System.Void SetResolution(System.Int32 width, System.Int32 height, UnityEngine.FullScreenMode fullscreenMode, System.Int32 preferredRefreshRate); // 0x00b23bb0
    static System.Void SetResolution(System.Int32 width, System.Int32 height, System.Boolean fullscreen, System.Int32 preferredRefreshRate); // 0x00b23c18
    static System.Void SetResolution(System.Int32 width, System.Int32 height, System.Boolean fullscreen); // 0x00b23c88
    static System.Void get_currentResolution_Injected(UnityEngine.Resolution& ret); // 0x00b23b3c
}

There is not a sleepTimeout field or any relevant get/set method. But from this Unity ScriptReference, it says there is.

[vfsfitvnm]

Don't take for granted the unity documentation, things may get stripped after compiling; in fact dnSpy doesn't show a RVA (relative virtual address) of the setter/getter, does it?
Also, I completely rely on Il2Cpp API (I don't touch any unity metadata at all), so there isn't much I could do about that...

[qingpengchen2011]

Got it. Thanks.

[vfsfitvnm]

@qingpengchen2011 However let me know if this is untrue, e.g. the game has that property for real. Also, you could try:

console.log(Il2Cpp.internalCall("UnityEngine.Screen::get_sleepTimeout", "int", []));

And see if it's not null

[qingpengchen2011]

It's null.