Usage: gms_show_set_constant ( name, value )
Sets the value of the window constant provided. name must be one of the following string values:
c_border: The border around the windows and the textboxes.
c_text: The text color.
c_grey_text: The color of faded text.
c_button1: The button color, top of the gradient. Used on buttons and the header.
c_button2: The slightly darker button color, bottom of the gradient. Used on buttons and the header.
c_background1: The background color, the top of the gradient. Used in textboxes and as window background.
c_background2: The slightly darker background, the bottom of the gradient. Used in textboxes and as window background.
c_good_color: The color of success messages.
c_fault_color: The color of the error messages.
f_title: The font used for the headers of the windows. Arial Black, 21, bold by default.
f_text: The normal font. Verdana, 16 by default.
f_small: Used for error messages and the txt_tos. Verdana 10, bold by default.
txt_friends: The header of the friends dialog
txt_achievements: The header of the achievements dialog
txt_login: The login button in the login dialog and the header of the login dialog
txt_username: The username placeholder on the login and register dialogs
txt_guest: The text that appears in front of a username when logging in as a guest (note: this does not actually change what text is appended at the front of a username when logging in, only what is shown in the login window)
txt_password: The placeholder text of the password field in the login and register dialogs
txt_repeat_password: The placeholder text of the second password box on the registration screen.
txt_email: The placeholder of the e-mail textbox on the registration screen.
txt_register: The register button on the login dialog and the header of the register dialog
txt_cancel: The cancel button of the login dialog
txt_tos: The "by using GameMaker Server..." text on the login dialog
txt_statistics: The header of the statistics dialog.
txt_updating_game: The header of the update dialog.
txt_reached: Text shown in the achievements screen when an achievement is reached.
txt_not_reached: Text shown in the achievements screen when an achievement is not reached.
txt_offline: Text shown in the friends dialog when a friend is offline.
txt_online: Text shown in the friends dialog when a friend is online.
txt_registration_complete: Message shown when the registration is successful.
Last message on 12 Oct 2015