in treeview cell mal editable mal nicht (gtk)

[MBoerner]

ich habe öfter diese Frage in Foren gesehen, aber nie eine Antwort, die es konkret löste, daher, falls es jemanden interessiert: Auf englisch, weil ich das auch in einem englischsprechenden Forum setze:

I found a way to make some cell editable or not, depending on the content of another cell:

The important command is “gtk_tree_view_column_add_attribute(column, renderer, "editable", COL_EDIT); “
It says that the attribute “editable” of the column value depends of the content of the column COL_EDIT

Name of the columns:
parameter name (COL_NAME)
parameter value (COL_VALUE)
parameter editable(COL_EDIT)


1) make the model of the treeview

pw_local.store = gtk_tree_store_new(COL_COUNT,G_TYPE_INTEGER, G_TYPE_BOOLEAN );
pw_local.model = GTK_TREE_MODEL(pw_local.store);
gtk_tree_view_set_model(GTK_TREE_VIEW(pw_local.treeview),pw_local.model);
usw...

2) make the column editable

g_signal_connect(G_OBJECT(renderer),"edited",G_CALLBACK(cb_function 2),NULL);
g_signal_connect(G_OBJECT(renderer),"editing-started",G_CALLBACK(cb_function 1),NULL);

3) make a column which will content a boolean value:
0 column is read only
1 column is editable

#define COLNAME		0
#define COL_VALUE	1
#define COL_EDIT		2

// parameter name

renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes("paramname",renderer,"text",COL_NAME,NULL);
 gtk_tree_view_column_set_visible (column,TRUE);  
gtk_tree_view_append_column(GTK_TREE_VIEW(treeview),column);

// parameter value

renderer = gtk_cell_renderer_text_new();
 g_object_set(G_OBJECT(renderer),"editable",TRUE,NULL);
g_signal_connect(G_OBJECT(renderer),"edited",G_CALLBACK(cb_function2),NULL);  
 g_signal_connect(G_OBJECT(renderer),"editing-started",G_CALLBACK(cb_function1),NULL);
column = gtk_tree_view_column_new_with_attributes("value",renderer,"text",COL_VALUE,NULL);
gtk_tree_view_append_column(GTK_TREE_VIEW(treeview),column);
_tree_view_column_add_attribute(column, renderer, "text", COL_VALUE);  // make a renderer text
gtk_tree_view_column_add_attribute(column, renderer, "editable", COL_EDIT);  //editable depends on the value in COL_EDIT
//editable or not
renderer = gtk_cell_renderer_text_new();
column = gtk_tree_view_column_new_with_attributes("paramedit",renderer,"text",COL_EDIT,NULL);
 gtk_tree_view_column_set_visible (column,TRUE);  
gtk_tree_view_append_column(GTK_TREE_VIEW(treeview),column);

4) fill the tree
for each row:

gboolean cell_editable;

cell_editable = FALSE  // or TRUE, if this row shoulb be editable
gtk_tree_store_append(pw_local.store, &child, &iter);	 append the new row
gtk_tree_store_set(pw_local.store, &child,
COL_NAME, “max speed”,
COL_VALUE, 1000,
COL_EDIT, cell_editable
,-1);

When you show the tree, in the rows where the last column contents “0” you can not edit the value. In the rows where the last column contents “1”, you can edit the row.