Any valid text or HTML fragment to display in the header cell for the checkbox column (defaults to '<div class="x-grid3-hd-checker"> </div>'). The default CSS class of 'x-grid3-hd-checker' displays a checkbox in the header and provides support for automatic check all/none behavior on header click. This string can be replaced by any valid HTML fragment, including a simple text string (e.g., 'Select Rows'), but the automatic check all/none behavior will only work if the 'x-grid3-hd-checker' class is supplied.
Any valid text or HTML fragment to display in the header cell for the checkbox column (defaults to '<div class="x-grid3-hd-checker"> </div>'). The default CSS class of 'x-grid3-hd-checker' displays a checkbox in the header and provides support for automatic check all/none behavior on header click. This string can be replaced by any valid HTML fragment, including a simple text string (e.g., 'Select Rows'), but the automatic check all/none behavior will only work if the 'x-grid3-hd-checker' class is supplied.
Any valid text or HTML fragment to display in the header cell for the checkbox column (defaults to '<div class="x-grid3-hd-checker"> </div>'). The default CSS class of 'x-grid3-hd-checker' displays a checkbox in the header and provides support for automatic check all/none behavior on header click. This string can be replaced by any valid HTML fragment, including a simple text string (e.g., 'Select Rows'), but the automatic check all/none behavior will only work if the 'x-grid3-hd-checker' class is supplied.
Any valid text or HTML fragment to display in the header cell for the checkbox column (defaults to '<div class="x-grid3-hd-checker"> </div>'). The default CSS class of 'x-grid3-hd-checker' displays a checkbox in the header and provides support for automatic check all/none behavior on header click. This string can be replaced by any valid HTML fragment, including a simple text string (e.g., 'Select Rows'), but the automatic check all/none behavior will only work if the 'x-grid3-hd-checker' class is supplied.