Showing tag results for Code

All these functions have an optional LPSECURITY_ATTRIBUTES parameter, for which everybody just passes NULL, thereby obtaining the default security descriptor. But what is the default security descriptor? Of course, the place to start is MSDN, in the section titled Security Descriptors for New Objects. It says that the default DACL comes from ...

Warning: .NET content ahead! Yesterday, Brad Abrams noted that Char.IsLetter() matches more than just "A" through "Z". What people might not realize is that Char.IsDigit() matches more than just "0" through "9". Valid digits are members of the following category in UnicodeCategory: DecimalDigitNumber. But what exactly is a DecimalDigitNumber? ...

How the design of the C++ language subverts thread safety.

If you want to display modal UI, you need to disable the owner and enable the modal child, and then reverse the procedure when the modal child is finished. And if you do it wrong, focus will get all messed up. If you are finished with a modal dialog, your temptation would be to clean up in the following order: But if you do that, you'll...

The window returned by GetDesktopWindow() is very special, and I see people abusing it all over the place. For example, many functions in the shell accept a window handle parameter to be used in case UI is needed. IShellFolder::EnumObjects, for example. What happens if you pass GetDesktopWindow()? If UI does indeed need to be displaye...

Perhaps you want a value to use as a sentinel, which you want to be guaranteed is never a valid thread ID or process ID. What values can you use? Nothing is explicitly written about this topic, but you can put on your logic cap and figure it out. If you need an invalid thread ID, you can use zero. How do you know that zero is an invalid thr...

Can't get past the first step.

Each dialog can have different base units, so it's meaningless to have a global converter.

Different settings for different components.

Yesterday's exercise asked you to predict and explain the codegen for the following fragment: Well, the codegen might go something like this: Let's use one of our fancy pictures: Just for fun, I swapped the order of Base1 and Base2. There is no requirement in the standard about the order in which storage is allocated for base classes, so ...