QgsRasterBandComboBox class

A combobox widget which displays the bands present in a raster layer.

Constructors, destructors, conversion operators

QgsRasterBandComboBox(QWidget* parent = nullptr): Constructor for QgsRasterBandComboBox.

auto currentBand() const -> int: Returns the current band number selected in the combobox, or -1 if no band is selected.
auto isShowingNotSetOption() const -> bool: Returns true if the combo box is showing the "not set" option.
auto layer() const -> QgsRasterLayer*: Returns the layer currently associated with the combobox.
void setShowNotSetOption(bool show, const QString& string = QString()): Sets whether the combo box should show the "not set" option.

void bandChanged(int band): This signal is emitted when the currently selected band changes.

void setBand(int band): Sets the current band number selected in the combobox.
void setLayer(QgsMapLayer* layer): Sets the raster layer for which the bands are listed in the combobox.

Returns the current band number selected in the combobox, or -1 if no band is selected.

Returns true if the combo box is showing the "not set" option.

Returns the layer currently associated with the combobox.

Sets whether the combo box should show the "not set" option.

Optionally the built in "not set" text can be overridden by specifying a string.

Sets the current band number selected in the combobox.

Sets the raster layer for which the bands are listed in the combobox.

If no layer is set or a non-raster layer is set then the combobox will be empty.