I have been try to click the hotkeys
Information about Windows hotkeys may be obtained by searching through the help manual that came with the Windows computer or by accessing the internal help manual located within the computer.
Press start, choose settings, then controls, then action mapping.
You have to buy traps and put them on the hotkeys. Then you just have to use them in battle
Its a glitch from the v66 Patch Update; Its shouldn't be occurring anymore unless you happen to hard log out (A Disconnet) from the game. If it does happen fix your hotkeys back up. Afterwards you might want to try reinstalling to the current v117 Patch.
Keyboard shortcut
http://www.411-registry-repair.com/block-windows-hotkeys
ATK Media - A utility that opens Windows Media Center when the multimedia hotkeys are pressed. Uninstall optional.
To download Dota 2 hotkeys, first, visit the official Dota 2 website or community forums where players share their custom keybindings. You can also find hotkey configurations on sites like Steam Workshop, where users upload their custom settings. Once you find a hotkey layout you like, download the configuration file, and place it in the Dota 2 folder under "cfg" in the game directory. Finally, launch Dota 2 and load the new hotkeys in the settings menu.
They're hotkeys, so you can easily switch weapons or equip other items.
If you have not modified your default hotkeys, you start the game you want to record, and press home to start and stop recording.
usually they are invisible. the way to log in is set up from the settings. press some hotkeys to show it such as ctrl+alt+shift+z.