Combo

This page has been automatically translated using the Google Translate API services. We are working on improving texts. Thank you for your understanding and patience.

Header

#include <gui/combo.h>

Functions

The ComboBox are text edit boxes with drop-down list (Figure 1). Therefore, they combine the functionality of the Edit and PopUp controls. In Hello PopUp and Combo! you have an example of use.

• Use combo_create to create a combo.
• Use combo_text to set edit text.
• Use combo_color to set the text color.
• Use combo_bgcolor to set the background color.
• Use combo_add_elem to add an item to the list.

combo_create ()

Create a combo control.

Combo*
combo_create(void);

Return

The combo.

combo_OnFilter ()

Set a function to filter the text while editing.

void
combo_OnFilter(Combo *combo,
               Listener *listener);

Remarks

See Filter texts and GUI Events.

combo_OnChange ()

Set a function to detect when the text has changed.

void
combo_OnChange(Combo *combo,
               Listener *listener);

Remarks

See Validate texts and GUI Events.

combo_OnFocus ()

Sets a handler for keyboard focus.

void
combo_OnFocus(Combo *combo,
              Listener *listener);

Remarks

See GUI Events.

combo_OnSelect ()

Set an event handler for the selection of a new item.

void
combo_OnSelect(Combo *combo,
               Listener *listener);

1
2
3
4
5
6
7

static void i_OnSelect(App *app, Event *e)
{
    const EvButton *p = event_params(e, EvButton);
    do_something_onselect(app, p->index);
}
...
combo_OnSelect(combo, listener(app, i_OnSelect, App));

Remarks

See GUI Events.

combo_min_width ()

Set the minimum control width.

void
combo_min_width(Combo *combo,
                const real32_t width);

Remarks

The default width of an EditBox will be 100px. This value can be modified by this function.

combo_text ()

Set the edit control text.

void
combo_text(Combo *combo,
           const char_t *text);

combo_align ()

Set text alignment.

void
combo_align(Combo *combo,
            const align_t align);

combo_passmode ()

Activate the password mode, which will hide the typed characters.

void
combo_passmode(Combo *combo,
               const bool_t passmode);

combo_editable ()

Enable or disable editing in the control.

void
combo_editable(Combo *combo,
               const bool_t is_editable);

combo_autoselect ()

Activate or deactivate auto-selection of text.

void
combo_autoselect(Combo *combo,
                 const bool_t autoselect);

Remarks

See Text selection.

combo_select ()

Select text.

void
combo_select(Combo *combo,
             const int32_t start,
             const int32_t end);

Remarks

See Text selection.

combo_tooltip ()

Assigns a tooltip to the edit control.

void
combo_tooltip(Combo *combo,
              const char_t *text);

combo_color ()

Set the text color.

void
combo_color(Combo *combo,
            const color_t color);

Remarks

RGB values may not be fully portable. See Colors.

combo_color_focus ()

Sets the color of the text, when the control has the keyboard focus.

void
combo_color_focus(Combo *combo,
                  const color_t color);

Remarks

RGB values may not be fully portable. See Colors.

combo_bgcolor ()

Set the background color.

void
combo_bgcolor(Combo *combo,
              const color_t color);

Remarks

RGB values may not be fully portable. See Colors.

combo_bgcolor_focus ()

Sets the background color, when the control has keyboard focus.

void
combo_bgcolor_focus(Combo *combo,
                    const color_t color);

Remarks

RGB values may not be fully portable. See Colors.

combo_phtext ()

Set an explanatory text for when the control is blank (placeholder).

void
combo_phtext(Combo *combo,
             const char_t *text);

combo_phcolor ()

Set the color of the placeholder text.

void
combo_phcolor(Combo *combo,
              const color_t color);

Remarks

RGB values may not be fully portable. See Colors.

combo_phstyle ()

Set the font style for the placeholder.

void
combo_phstyle(Combo *combo,
              const uint32_t fstyle);

combo_copy ()

Copies the selected text to the clipboard.

void
combo_copy(const Combo *combo);

Remarks

See Clipboard operations.

combo_cut ()

Cuts the selected text, copying it to the clipboard.

void
combo_cut(Combo *combo);

Remarks

See Clipboard operations.

combo_paste ()

Pastes the text from the clipboard into the caret position.

void
combo_paste(Combo *combo);

Remarks

See Clipboard operations.

combo_add_elem ()

Add a new item to the popup list.

void
combo_add_elem(Combo *combo,
               const char_t *text,
               const Image *image);

combo_set_elem ()

Edit an item from the drop-down list.

void
combo_set_elem(Combo *combo,
               const uint32_t index,
               const char_t *text,
               const Image *image);

combo_ins_elem ()

Inserts an item in the drop-down list.

void
combo_ins_elem(Combo *combo,
               const uint32_t index,
               const char_t *text,
               const Image *image);

Remarks

It works the same as combo_add_elem, but inserting at an arbitrary position, instead of at the end of the list.

combo_del_elem ()

Removes an item from the drop-down list.

void
combo_del_elem(Combo *combo,
               const uint32_t index);

combo_clear ()

Remove all items from the dropdown list.

void
combo_clear(Combo *combo);

combo_count ()

Gets the number of items in the list.

uint32_t
combo_count(const Combo *combo);

Return

The number of elements.

combo_list_height ()

Set the size of the drop-down list.

void
combo_list_height(Combo *combo,
                  const uint32_t elems);

combo_selected ()

Set the selected popup element.

void
combo_selected(Combo *combo,
               const uint32_t index);

combo_get_selected ()

Get the selected popup item.

uint32_t
combo_get_selected(const Combo *combo);

Return

The selected item.

combo_get_text ()

Gets the text of a popup element.

const char_t*
combo_get_text(const Combo *combo,
               const uint32_t index);

Return

The text of the element.