On 11/30/06, Murray Cumming <[EMAIL PROTECTED]> wrote: > So, a GnomeDbGrid can show a GdaDataModel, I believe, and just shows it > appropriately. But how can I influence things such as > - What human-readable text is used for the column headings. > - How numbers are formatted. > - What drop-down choices are available for fields. > > There isn't much in the documentation to give me clues: > http://www.openismus.com/temp/libgnomedb_3_0_docs/html/GnomeDbGrid.html
As mentionned in http://www.openismus.com/temp/libgnomedb_3_0_docs/html/viewchanges.html, the GnomeDbGrid is composed of a GnomeDbRawGrid (which inherits GtkTreeView) and of a GnomeDbDataWidgetInfo (which is responsible for displaying the navigation buttons at the bottom of the grid). So for your first question, you can modify the headers of the grid in the same way as you modify the headers of a GtkTreeView. Now for the second and 3rd question let me first detail the process used to creare the columns of a GnomeDbRawGrid (which is the same as when the entry widgets are created for the GnomeDbBasicForm widget). Here is the process: * create a GdaDataProxy object from the GdaDataModel containing data to display, to store temporary modifications made but not yet written * create a GdaDataModelIter object as an iterator in the proxy (which is also a GdaDataModel) * for each parameter contained in that iterator (which is also a GdaParameterList), create a column. So the default behaviour is to display data as-is, with one free-fill column for each column of the data model to display. If you change the properties of that iterator (which is public, obtained using gnome_db_data_widget_get_current_data (GnomeDbRawGrid)), the columns are re-created. So for your 3rd question, if you want a drop down instead of a free-fill, then all you have to do is restrict the values of the parameter corresponding to the column you want a drop down choice, for example: " iter = gnome_db_data_widget_get_current_data (data_widget); param = gda_parameter_list_find_param (GDA_PARAMETER_LIST (iter), "SalesRep"); gda_parameter_restrict_values (param, restrict_with, restrict_col, NULL)); " (code copied from the extra/demos/linked_grid_form.c file) Now for the 2nd question, the short answer is: you can't, but there are two solutions to make it possible to control the exact formatting of the individual cells: 1- improve the default cell renderers used in libgnomedb, which will benefit all the applications using libgnomedb 2- write a custom cell renderer as a plugin, and use it by setting the "entry_plugin" property of the parameter you want. The GtkCellRenderer used in the GnomeDbRawGrid is done in the gnome_db_util_new_cell_renderer() function (there is also a gnome_db_util_new_data_entry() function for the same purpose but for data entry widgets used in forms), in the gnome-db-tools.c file. Cheers, Vivien _______________________________________________ gnome-db-list mailing list gnome-db-list@gnome.org http://mail.gnome.org/mailman/listinfo/gnome-db-list
