February 3, 2000

Question: I would like to get the permissions for the users of my app. I have setup groups for users with the appropriate permisions. Now all I want to do is check which group they belong to, when they execute my app. Answer: Actually, it’s not too difficult in VB.

Question: When I learned VC++, I found a bizarre statement inevery .cpp produced by AppWizard: “static char THIS_FILE[]=__FILE__;” Why does AppWizard redefine THIS_FILE?I find that THIS_FILE is just defined as__FILE__ in AFX.h. Any idea why it’s this way? Answer: The THIS_FILE variable stores the name of the current translation unit.

Question: It’s been years since my paws had to pound out a solution in C, so I’m a bit rusty and would like a second opinion.. or third… or fourth. Problem: I need to serialize access to a “seed” file containing an incremental sequencing number. Process is: read file increment

Question: How do you create an array of pointers to vectors?The different vectors will, eventually, have different lengths. Answer: You declare an array of pointers to vector like this: std::vector * vecptrarr[10]; Of course, you’ll need to allocate the vector object at a later stage and assign addresses to the

Question: How do I use a variable to reference a control on a form? For instance, if I have five controls on a form named Edit1 through Edit5, and I make a for loop the builds the string “Edit1”, how do I use that string to refernce the actual control

Question: How can I find the current cursor position in text box? Answer: You can use the SelStart property of the TextBox to indicate where the cursor is in the text box. The SelText property can be set to the text that you want to insert at the cursor position.

Question: How do I change an ASCII value to a letter in C++? Answer: You can directly assign the ASCII vlaues to a variables of type char.The decimal value is automatically converted to char, without anyspecial casting operations. For example, the ASCII value of the ‘A’ is65. You assign this

Question: I want to make a menu, where you can select from 1-4. By pressing one of these keys you should get into a subprogram. Now I have to press enter after I select 1,2,3 or 4. Is it possible to have C++ bypass “enter” and go directly to the