Topic       : The GFA-Basic Compendium
Author      : GFA Systemtechnik GmbH
Version     : GFABasic.HYP v2.98 (12/31/2023)
Subject     : Documentation/Programming
Nodes       : 899
Index Size  : 28056
HCP-Version : 3
Compiled on : Atari
@charset    : atarist
@lang       : 
@default    : Document not found
@help       : Help
@options    : +g -i -s +z
@width      : 75
@hostname   : STRNGSRV
@hostname   : CAB     
@hostname   : HIGHWIRE
@hostname   : THING   
View Ref-FileGFA-BasicGFA-Basic is the best BASIC for the Atari!
 bindings for N.AES v2.0

appl_control()

appl_yield

form_popup()

graf_multirubber()

objc_xfind()

shel_help()

shel_rdef()

shel_wdef()

wind_draw()

wind_sget()

------------------------------------------------------------------------------

WHITEBAK N.AES

 purpose: Switch on the MagiC special buttons.

 C-prototype: #define WHITEBAK 0x0040

 Binding: Tree[obnr].If_state |= WHITEBAK;                       [bit 6 on]

Parameter description:


If_type = G_BUTTON

 G_BUTTON with underscore:
 (if_state >> 8) & 0x80 = 0.                                     [bit 15 off]
 (if_state >> 8) & 0x7f decides the position of the underscore.  [bits 8-14]

 As Checkbox with underscore:
 If_flags & RADIOBUTTON = 0.                                     [bit 4 off]
 (if_state >> 8) & 0x80 = 0x80.                                  [bit 15 on]
 (if_state >> 8) & 0x7f decides the position of the underscore.  [bits 8-14]
 If_flags & FL3DMASK decides the colour of the underscore.       [bits 9-10]

 As Radiobutton with underscore:
 If_flags & RADIOBUTTON = RADIOBUTTON.                           [bit 4 on]
 (if_state >> 8) & 0x80 = 0x80.                                  [bit 15 on]
 (if_state >> 8) & 0x7f decides the position of the underscore.  [bits 8-14]
 If_flags & FL3DMASK decides the colour of the underscore.       [bits 9-10]

 As Checkbox without underscore:
 (if_state >> 8) = 0xff.                                         [bits 8-15 on]
 If_flags & RADIOBUTTON = 0.                                     [bit 4 off]

 As Radiobutton without underscore:
 (if_state >> 8) = 0xff.                                         [bits 8-15 on]
 If_flags & RADIOBUTTON = RADIOBUTTON.                           [bit 4 on]

 As Frame:
 (if_state >> 8) = 0xfe.                                         [bit 9-15 on]
 If_state & SHADOWED control font size                           [bit 5 on]
 If_flags & FL3DMASK decides the 3D-behaviour of frame and font. [bits 9-10]


If_type = G_STRING

 G_STRING with underscore:
 (if_state >> 8) & 0x80 = 0.                                     [bit 15 off]
 (if_state >> 8) & 0x7f decides the position of the underscore.  [bits 8-14]

 G_STRING, completely underlined based on chars:
 (if_state >> 8) = 0xfe.                                         [bits 9-15]
 If_flags & FL3DMASK decides the 3D-behaviour of line and font.  [bits 9-10]

 G_STRING, completely underlined based on object width:
 (if_state >> 8) = 0xff.                                         [bits 8-15 on]
 If_flags & FL3DMASK decides the 3D-behaviour of line and font.  [bits 9-10]


If_type = G_TITLE

 G_TITLE with underscore:
 (if_state >> 8) & 0x80 = 0.                                     [bit 15 off]
 (if_state >> 8) & 0x7f decides the position of the underline.   [bits 8-14]


 3D-behaviour:
 FL3DIND Bit switches text 3D attribute.
 FL3DBAK Bit switches line/frame 3D attribute.

 Underline colour:
 None       = black.
 Background = black.
 Indicator  = green.
 Activator  = red.

With all underscore positions:
If the text is shorter, there will be no underscore drawn.

See too: appl_getinfo(), form_keybd()