Also not a great task. Goto the row you wish to delete and call hk_datasource::delete_actualrow()
Example 7-1. Delete a row
1 #include <hk_classes.h> 2 #include <iostream> 3 int main() 4 { 5 hk_drivermanager* mydrivermanager = new hk_drivermanager(); 6 if (mydrivermanager==NULL) {cout <<"error creating mydrivermanager"<<endl;exit(1);} 7 hk_connection* myconnection = mydrivermanager->new_connection("mysql"); 8 if (myconnection==NULL) {cout <<"error creating myconnection"<<endl;exit(1);} 9 myconnection->set_host("localhost"); 10 myconnection->set_user("root"); 11 myconnection->set_password("mypasswd"); 12 myconnection->connect(); 13 14 hk_database* mydatabase=myconnection->new_database("exampledb"); 15 if (mydatabase==NULL) {cout <<"error creating mydatabase"<<endl;exit(1);} 16 hk_datasource* mydatasource= mydatabase->new_table("authors"); 17 if (mydatasource==NULL) {cout <<"error creating mydatasource"<<endl;exit(1);} 18 mydatasource->enable(); 19 20 hk_column* mycolumn = mydatasource->column_by_name("name"); 21 if (mycolumn==NULL) {cout <<"error getting column"<<endl;exit(1);} 22 23 mydatasource->goto_row(3); 24 mydatasource->delete_actualrow(); 25 26 27 delete mydrivermanager; 28 } |
When you try this out you will be asked if you really want to delete the data. If this question is disturbing you switch it off. Use the function hk_class::set_showpedantic(false); for this.