If you don’t take specific actions, you get an Access Denied Error when you try to raise an event from an MTS component into a client. This happens because the
Among the different COM details that VB hides to the programmers, one of the most problematic one is that it doesn’t let you take control on interface GUIDs. Binary compatibility
There is quite a lot of misunderstanding among COM newbies about what really happens when a COM interface is passed as a method parameter. As in most of the cases,
What I describe for COM+, applies to MTS with some slight differences as well. Registering COM objects remotely has been quite a pain before MTS showed up (remember the VBR
Suppose you have a table: select * from tblTestName Amount— ——A 10B 20c 40D 50E 30 The following single SELECT query can be used to calculate cumulative totals: –//////////////////////////////////////SELECT t1.Name,
The following code is bad: char* charpointer= new char[SOMECONSTANT];delete charpointer; // should have been delete [] charpointer; new and new[] are allowed to use different memory pools. The default new/delete
There may be certain situations where you have to sort character-based columns in a particular order.For example, Let us consider a table: –///////////////////////////////////SID Subject Marks— —— —–1 Physics 801 Chemistry
The most common example where ‘open’ date is used is in the expiration_date for an entry. It could be set for a particular date, or be NULL if the expiration
A temporary object is destroyed at the end of the full expression in which it was created. Consider the following example: #include #include // for strlen()string s1, s2;int len=(s1+s2).c_str(); //