Tk Source Code

'\".TP
'\"\fIpathName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
'\"Modify or query widget options.
'\"See \fIttk::widget(n)\fR.
.TP
\fIpathName \fBcurrent\fR ?\fInewIndex\fR?
If \fInewIndex\fR is supplied, sets the combobox value
to the element at position \fInewIndex\fR in the list of \fB\-values\fR
(in addition to integers, the \fBend\fR index is supported and indicates
the last element of the list).
Otherwise, returns the index of the current value in the list of
\fB\-values\fR or \fB\-1\fR if the current value does not appear in the list.
.TP
\fIpathName \fBget\fR
Returns the current value of the combobox.
'\".TP
'\"\fIpathName \fBidentify \fIx y\fR

    EntryConfigure,		/* configureProc */
    EntryPostConfigure,  	/* postConfigureProc */
    TtkWidgetGetLayout, 	/* getLayoutProc */
    TtkWidgetSize, 		/* sizeProc */
    EntryDoLayout,		/* layoutProc */
    EntryDisplay		/* displayProc */
};

/*------------------------------------------------------------------------
 * Named indices for the combobox "current" command
 */
static const char *const comboboxCurrentIndexNames[] = {
    "end", NULL
};
enum comboboxCurrentIndices {
    INDEX_END
};

/*------------------------------------------------------------------------
 * +++ Combobox widget record.
 */

typedef struct {
    Tcl_Obj	*postCommandObj;

		currentIndex = -1;
	    }
	}
	cbPtr->combobox.currentIndex = currentIndex;
	Tcl_SetObjResult(interp, Tcl_NewIntObj(currentIndex));
	return TCL_OK;
    } else if (objc == 3) {
        int result, index;

        result = Tcl_GetIndexFromObj(NULL, objv[2], comboboxCurrentIndexNames,
                "", 0, &index);
        if (result == TCL_OK) {

            /*
             * The index is one of the named indices.
             */

	    switch (index) {
	    case INDEX_END:
	        /* "end" index */
                currentIndex = nValues - 1;
                break;
	    }
        } else {

            /*
             * The index should be just an integer.
             */

	    if (Tcl_GetIntFromObj(NULL, objv[2], &currentIndex) != TCL_OK) {
	        Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		        "Incorrect index %s", Tcl_GetString(objv[2])));
	        Tcl_SetErrorCode(interp, "TTK", "COMBOBOX", "IDX_VALUE", NULL);
	        return TCL_ERROR;
	    }

	    if (currentIndex < 0 || currentIndex >= nValues) {
	        Tcl_SetObjResult(interp, Tcl_ObjPrintf(
		        "Index %s out of range", Tcl_GetString(objv[2])));
	        Tcl_SetErrorCode(interp, "TTK", "COMBOBOX", "IDX_RANGE", NULL);
	        return TCL_ERROR;
	    }
        }

	cbPtr->combobox.currentIndex = currentIndex;

	return EntrySetValue(recordPtr, Tcl_GetString(values[currentIndex]));
    } else {
	Tcl_WrongNumArgs(interp, 2, objv, "?newIndex?");
	return TCL_ERROR;

} -result 1

test combobox-2.4 "current -- value not in list" -body { 
    .cb set "z"
    .cb current
} -result -1

test combobox-2.5 "current -- set to end index" -body { 
    .cb configure -values [list a b c d e thelastone]
    .cb current end
    .cb get
} -result thelastone

test combobox-2.6 "current -- set to unknown index" -body { 
    .cb configure -values [list a b c d e]
    .cb current notanindex
} -returnCodes error -result {Incorrect index notanindex}

test combobox-2.end "Cleanup" -body { destroy .cb }

test combobox-3 "Read postoffset value dynamically from current style" -body {
    ttk::combobox .cb -values [list a b c] -style "DerivedStyle.TCombobox"
    pack .cb -expand true -fill both 
    ttk::style configure DerivedStyle.TCombobox -postoffset [list 25 0 0 0]
    ttk::combobox::Post .cb