/**
* Sets the receiver's tool tip text to the argument, which may be null indicating that the
* default tool tip for the control will be shown. For a control that has a default tool tip, such
* as the Tree control on Windows, setting the tool tip text to an empty string replaces the
* default, causing no tool tip text to be shown.
*
* <p>The mnemonic indicator (character '&') is not displayed in a tool tip. To display a
* single '&' in the tool tip, the character '&' can be escaped by doubling it in the
* string.
*
* @param string the new tool tip text (or null)
* @exception SWTException
* <ul>
* <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed
* <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver
* </ul>
*/
public void setToolTipText(String string) {
checkWidget();
if (parent.toolTipText == null) {
Shell shell = parent._getShell();
setToolTipText(shell, string);
}
toolTipText = string;
/*
* Since tooltip text of a tool-item is used in overflow
* menu when images are not shown, it is required to
* reset the proxy menu when the tooltip text changes.
* Otherwise, the old menuItem appears in the overflow
* menu as a blank item.
*/
if ((style & SWT.DROP_DOWN) != 0) {
proxyMenuItem = 0;
proxyMenuItem = OS.gtk_tool_item_retrieve_proxy_menu_item(handle);
OS.g_signal_connect(
proxyMenuItem, OS.activate, ToolBar.menuItemSelectedFunc.getAddress(), handle);
}
}
