Showing tag results for Code

Prerequisites: Basic understanding of assembly language. When you debug through some managed code at the assembly level, you may find that there are an awful lot of instructions scattered throughout your method. What are they doing there; isn't the JIT smart enough to remove them? Isn't this going to slow down execution of my program? It is my u...

When you debug through some managed code at the assembly level, you'll find a whole lot of seemingly pointless instructions that perform a comparison but ignore the result. What's the point of comparing two values if you don't care what the result is? In C++, invoking an instance method on a pointer results in undefined behavior. In other words, ...

One of the differences between C++ and C# is when static constructors run. In C++, static constructors are the first thing run in a module, even before the function runs.¹ In C#, however, static constructors don't run until you use the class for the first time. If your static constructor has side effects, you may find yourself experiencing ...

The C and C++ languages leave the order of evaluation generally unspecified aside from specific locations called sequence points. Side effects of operations performed prior to the sequence point are guaranteed visible to operations performed after it.¹ For example, the C comma operator introduces a sequence point. When you write f(), g(), the...

The primary monitor by definition has its upper left corner at (0, 0). Therefore, you can use this function: To make double extra sure (belt and suspenders), we also tell it, "If you're not sure what monitor to return, give us the primary." Sure, this sounds obviously simple, but I actually found somebody who fumbled around in the dark passi...

When you're installing your shell extension, you need to know which progid to hang it off of inside . We'll start with the title question and then move on to other predefined (but perhaps not well-known) progids.

I was asked to look at an application compatibility bug in a program from a major vendor. But that's actually irrelevant; what I'm writing about today has nothing to do with application compatibility. That's just what drew my attention to the program in the first place. At some point during the install, the setup program encountered an error and w...

Somebody I'd never heard of sent me email with a general programming question. (This is one of the top ways of instantly making me not interested in talking to you.) I have a modal dialog box which I hide with , and I want to enable the parent window so the parent window will get focus and keyboard input. Is this possible? If so, how do I do it?...

The function reports an error in two different ways, depending on whether you passed as the parameter. The documentation in MSDN is correct, but I've discovered that people prefer when I restate the same facts in a different way, so here comes the tabular version of the documentation. I'd show some sample code, but the documentation in MSDN ...

The function is one of those functions everybody tries to pretend doesn't exist. You thought was bad; is even worse. The idea behind was that you had a window with a menu as well as controls, and some of the menu items were checkable, indicating whether the corresponding control should be shown. For example, on your View menu you might have...