The hk_classes programmer's tutorial
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# Chapter 7. Delete a row

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.

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