'Enable Tablet Mode on Windows 10 through Code?

Ive read various way on how to detect if a Windows 10 device is in Tablet Mode, most notably the topic below;

How can I detect when Window 10 enters tablet mode in a Windows Forms application?

I would like to enable/disable Tablet Mode through code (.Net C#) but I cant find any resources to achieve this. Ive tried changing the registry key and sending a HWND_BROADCAST that a change has occurred but this doesn't initiate the change to tablet mode.

Ive also tried using Spy++ style applications but cant see the messages being sent.

Does a method exist to do this?

c++sharp.netwindows


Solution 1:[1]

There is no real way to do this in C#. Of course you can change the registry key, but you will need a log off/on to change from or to tablet mode.

HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\ImmersiveShell\TabletMode

Enable: 1 or disable 0

Since I had a problem that my WPF-App will not appear on startup with tablet mode on, I used a AutoHotKey script. You can create a .exe as well. Source: https://autohotkey.com/boards/viewtopic.php?t=15619

#NoEnv
SetBatchLines -1
ListLines Off
#NoTrayIcon 


TABLETMODESTATE_DESKTOPMODE := 0x0
TABLETMODESTATE_TABLETMODE := 0x1

TabletModeController_GetMode(TabletModeController, ByRef mode) {
    return DllCall(NumGet(NumGet(TabletModeController+0),3*A_PtrSize), "Ptr", TabletModeController, "UInt*", mode)
}

TabletModeController_SetMode(TabletModeController, _TABLETMODESTATE, _TMCTRIGGER := 4) {
    return DllCall(NumGet(NumGet(TabletModeController+0),4*A_PtrSize), "Ptr", TabletModeController, "UInt", _TABLETMODESTATE, "UInt", _TMCTRIGGER)  
}

ImmersiveShell := ComObjCreate("{C2F03A33-21F5-47FA-B4BB-156362A2F239}", "{00000000-0000-0000-C000-000000000046}")
TabletModeController := ComObjQuery(ImmersiveShell, "{4fda780a-acd2-41f7-b4f2-ebe674c9bf2a}", "{4fda780a-acd2-41f7-b4f2-ebe674c9bf2a}")

if (TabletModeController_GetMode(TabletModeController, mode) == 0)
    TabletModeController_SetMode(TabletModeController, mode == TABLETMODESTATE_DESKTOPMODE ? TABLETMODESTATE_TABLETMODE : TABLETMODESTATE_DESKTOPMODE)

ObjRelease(TabletModeController), TabletModeController := 0
ObjRelease(ImmersiveShell), ImmersiveShell := 0 ; Can be freed after TabletModeController is created, instead

Solution 2:[2]

Poke around in here - You will want to focus on the samples for user interaction mode.

NOTE: This is for UWP (Universal Windows Platform), aka Windows 10+, and you will need code for other versions of Windows if you are not targeting Win 10 only.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Nathan Tuggy
Solution 2 Sagar V

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