mpv-test.ahk

Gui, +HWNDhGUI
Gui, Add, Text, x50 y50 w700 h500 HWNDhText, 
Gui, Show, w800 h620

mpv := "D:\Program Files\mpv\mpv.exe"
Run, %mpv% --idle --input-ipc-server=\\.\pipe\mpvsocket --wid=%hText% ; Or --wid=%hGUI%
return

GuiDropFiles:
	mpv_loadfile(A_GuiEvent)
return

mpv_loadfile(ByRef filename) {
	mpv_command("loadfile """ StrReplace(filename, "\", "\\") """")
}

mpv_command(ByRef sCommand) {
	Run, %ComSpec% /c echo %sCommand% > \\.\pipe\mpvsocket,, Hide
}

GuiClose:
ExitApp

WM_KeyDown(wParam, lParam, nMsg, hWnd) {
	static _ := OnMessage(0x100, "WM_KeyDown")
	key := GetKeyName( Chr(wParam) )
	ControlSend, mpv1, % "{" key "}", A
}