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added a note about no-window widgets.
2000-06-14 Damon Chaplin <damon@helixcode.com> * gtk/tmpl/gtktooltips.sgml: added a note about no-window widgets.
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@ -17,6 +17,14 @@ The length of time the user must keep the mouse over a widget before the tip is
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<para>
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To assign a tip to a particular #GtkWidget, gtk_tooltips_set_tip() is used.
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</para>
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<note>
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<para>
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Tooltips can only be set on widgets which have their own X window.
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To check if a widget has its own window use 'GTK_WIDGET_NO_WINDOW (widget)'.
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To add a tooltip to a widget that doesn't have its own window, place the
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widget inside a #GtkEventBox and add a tooltip to that instead.
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</para>
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</note>
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<para>
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The default appearance of all tooltips in a program is determined by the current gtk theme that the user has selected.
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</para>
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