dlgitem_set_table_column_header_at
dlgitem_set_table_column_header_at(window, dlgitem, column, label)
Assigns a header label to the column specified by column.
• window — The window identifier of the window containing the table.
• dlgitem — The value of the control's id attribute.
• column — The 1-based index of the column. If the table has fewer columns than the value of column, the table is extended.
• label — The new header label of the column.
If dlgitem does not refer to a table, or if column is illegal, $ERROR is set and 0 is returned. Otherwise, 1 is returned.
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