问题
I need to set or toggle auto-hiding of Windows 10 taskbar programmatically. An action bound to a hotkey for productivity and convenience. Is there a command-line command or a DLL call which allows to achieve equivalent of flipping the following switch:
Currently I am achieving this by opening the above Settings window and sending keystrokes for search, followed by Downs and Space and Alt+F4 but it is slow and unreliable.
This question is not language-specific since DLL calls look pretty much the same everywhere, although my final implementation will be in AutoHotKey.
Expected result: After running the command, the Windows Explorer will change its behavior as if the setting Automatically hide the taskbar in desktop mode was enabled (or disabled or toggled).
回答1:
It is ABM_SETSTATE message.
After finding the proper Windows message I have also found the implementation in AutoHotKey:
ABM_SETSTATE := 10
ABS_NORMAL := 0x0
ABS_AUTOHIDE := 0x1
ABS_ALWAYSONTOP := 0x2
VarSetCapacity(APPBARDATA, 36, 0)
Address := NumPut(36, APPBARDATA)
Address := NumPut(WinExist("ahk_class Shell_TrayWnd"), Address + 0)
NumPut(ABS_NORMAL, Address + 24)
DllCall("Shell32.dll\SHAppBarMessage", UInt, ABM_SETSTATE, UInt, &APPBARDATA)
Change the parameter in the second line from the bottom from ABS_NORMAL to ABS_AUTOHIDE to achieve the expected other state.
来源：https://stackoverflow.com/questions/53367237/a-command-or-message-or-dll-call-to-set-automatic-hiding-of-windows-taskbar