Add method for inserting ComboBox item

void uiComboboxInsertAt(uiComboBox *c, int n, const char *text)
* Unix: gtk_combo_box_insert
* Windows: CB_INSERTSTRING
* Darwin: NSArrayController.insert

Author: tabrath

darwin/combobox.m

@@ -81,6 +81,11 @@ void uiComboboxAppend(uiCombobox *c, const char *text)
 	[c->pbac addObject:uiprivToNSString(text)];
 }
 
+void uiComboboxInsertAt(uiCombobox *c, int n, const char *text)
+{
+	[c->pbac insert:uiprivToNSString(text) atArrangedObjectIndex:n]
+}
+
 void uiComboboxDelete(uiCombobox *c, int n)
 {
 	[c->pb removeItemAtIndex:n];

test/page4.c

@@ -39,6 +39,11 @@ static void appendCBRB(uiButton *b, void *data)
 	uiRadioButtonsAppend(rb, "New Item");
 }
 
+static void insertCB(uiButton *b, void *data)
+{
+	uiComboboxInsertAt(cbox, 0, "Inserted item");
+}
+
 static void deleteCB(uiButton *b, void *data)
 {
 	uiComboboxDelete(cbox, 0);
@@ -157,6 +162,9 @@ uiBox *makePage4(void)
 	b = uiNewButton("Append");
 	uiButtonOnClicked(b, appendCBRB, NULL);
 	uiBoxAppend(hbox, uiControl(b), 0);
+	b = uiNewButton("Insert");
+	uiButtonOnClicked(b, insertCB, NULL);
+	uiBoxAppend(hbox, uiControl(b), 0);
 	b = uiNewButton("Delete");
 	uiButtonOnClicked(b, deleteCB, NULL);
 	uiBoxAppend(hbox, uiControl(b), 0);

ui.h

@@ -226,6 +226,7 @@ _UI_EXTERN uiSeparator *uiNewVerticalSeparator(void);
 typedef struct uiCombobox uiCombobox;
 #define uiCombobox(this) ((uiCombobox *) (this))
 _UI_EXTERN void uiComboboxAppend(uiCombobox *c, const char *text);
+_UI_EXTERN void uiComboboxInsertAt(uiCombobox *c, int n, const char *text);
 _UI_EXTERN void uiComboboxDelete(uiCombobox *c, int n);
 _UI_EXTERN void uiComboboxClear(uiCombobox *c);
 _UI_EXTERN int uiComboboxSelected(uiCombobox *c);

unix/combobox.c

@@ -30,6 +30,11 @@ void uiComboboxAppend(uiCombobox *c, const char *text)
 	gtk_combo_box_text_append(c->comboboxText, NULL, text);
 }
 
+void uiComboboxInsertAt(uiCombobox *c, int n, const char *text)
+{
+	gtk_combo_box_text_insert(c->comboboxText, n, NULL, text);
+}
+
 void uiComboboxDelete(uiCombobox *c, int n)
 {
 	gtk_combo_box_text_remove(c->comboboxText, n);

windows/combobox.cpp

@@ -69,6 +69,20 @@ void uiComboboxAppend(uiCombobox *c, const char *text)
 	uiprivFree(wtext);
 }
 
+void uiComboboxInsertAt(uiCombobox *c, int n, const char *text)
+{
+	WCHAR *wtext;
+	LRESULT res;
+
+	wtext = toUTF16(text);
+	res = SendMessageW(c->hwnd, CB_INSERTSTRING, (WPARAM)n, (LPARAM) wtext);
+	if (res == (LRESULT) CB_ERR)
+		logLastError(L"error inserting item to uiCombobox");
+	else if (res == (LRESULT) CB_ERRSPACE)
+		logLastError(L"memory exhausted inserting item to uiCombobox");
+	uiprivFree(wtext);
+}
+
 void uiComboboxDelete(uiCombobox *c, int n)
 {
 	LRESULT res;