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- gadutil.library/GU_CreateGadgetA gadutil.library/CreateGadgetA
-
- NAME
- GU_CreateGadgetA -- Create a gadget with built-in hotkey support.
-
- SYNOPSIS
- gad = CreateGadgetA(kind, prevgad, newgad, taglist)
- D0,A0 D0 A0 A1 A2
-
- struct Gadget *GU_CreateGadgetA(ULONG, struct Gadget *,
- struct NewGadget *, struct TagItem *);
-
- FUNCTION
- GU_CreateGadgetA() allocates and initializes a new gadget of the
- specified kind, and attaches it to the previous gadget. The gadget
- is created based on the supplied kind, NewGadget structure, and
- tags.
-
- This function differs from the GadTools equivalent by supporting
- some extra tags to allow the gadget to be selected using the
- keyboard.
-
- INPUTS
- kind - kind of gadget to create. One of the XXX_KIND values
- defined in <libraries/gadtools.h>.
-
- prevgad - pointer to the previous gadget that this new gadget
- should be attached to. This function will fail if
- this value is NULL.
-
- newgad - a filled in NewGadget structure describing the desired
- gadget's size, position, label, etc.
-
- taglist - pointer to an array of tags providing optional extra
- parameters, or NULL.
-
- TAGS
- All kinds:
-
- GT_Underscore - Indicates the symbol that precedes the character
- in the gadget label to be underscored. This can be to
- indicate keyboard equivalents for gadgets. GadUtil has
- the ability to process the keyboard equivalents if some
- other tags are used.
-
- GU_Hotkey - This tag selects the hotkey to be used as an automatic
- keyboard command for the gadget. The ti_Data field should
- contain the ASCII or RAWKEY code for the hotkey.
- This tag may be used together with the GU_HotkeyCase and
- GU_LabelHotkey. The GU_RawKey tag requires this tag.
-
- GU_HotkeyCase - This tag makes the keyboard command case-sensitive.
- This tag may not be used with GU_RawKey.
-
- GU_LabelHotkey - This tag picks the hotkey from the gadget text
- field in the NewGadget structure when the gadget is created.
- If no key is marked with the underscore, the GU_HotKey code
- will be used.
-
- This tag supports and requires the GT_Underscore tag. The
- character that was given in the GT_Underscore tag will be
- used to find the code for the hotkey.
-
- GU_RawKey - This tag makes the hotkey code to a RAWKEY code. All
- keys on the keyboard has one rawkey code that matches the
- key.
-
- If your program also gets VANILLAKEY events, you must be
- careful when selecting the rawkey code to be used as a
- keyboard shortcut for this gadget. RAWKEY events will only
- be sent for special keys (such as the HELP, Control, Alt
- and function keys) that don't map to a single character.
- All keys that maps to a single character will be processed
- as a VANILLAKEY event.
-
- This tag may not be used with (and will also disable) the
- GU_HotkeyCase and GU_LabelHotkey tags.
-
- Kind specific tags:
- See the GadTools function CreateGadgetA for all other tags.
-
- RESULT
- gad - pointer to the new gadget, or NULL if the allocation failed
- or if prevgad was NULL.
-
- NOTES
- Note that the ng_VisualInfo and ng_TextAttr fields of the NewGadget
- structure must be set to valid VisualInfo and TextAttr pointers, or
- this function will fail.
-
- SEE ALSO
- GU_FreeGadgets(), GU_SetGadgetAttrsA(), GU_GetVisualInfoA(),
- GU_GetIMsg, gadtools/CreateGadgetA, <libraries/gadtools.h>
-