Toma solo un par de segundos presionar la tecla F1 sobre el componente e ir a su lista de propiedades. Tomará un par de minutos revisar la lista y leer la ayuda de aquellas que nos parezcan candidatas.
Francamente me parece que el sentido de los foros se pierde cuando los foristas no nos tomamos primero el tiempo de intentar por nuestra propia cuenta...
Cita:
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Empezado por F1
Limits which files are displayed in the file list box.
property Mask: string;
Description
Set Mask to a regular expression to limit the list box to files that match the mask. The value of the mask is a file name that may include wildcards. The asterisk (*) is a wildcard which matches any number of arbitrary characters. The question mark (?) is a wildcard which matches a single arbitrary character. The file mask *.* displays all files, which is the default value.
To specify multiple file masks, separate the file mask specifications with semicolons. For example, *.PAS; *.EXE.
If the form includes a TFilterComboBox object, set the FileList property of the filter combo box to have the Mask property updated automatically when the Mask property of the filter combo box changes.
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