Showing tag results for Code

"How do I destroy a window that belongs to another process?" The function will not destroy windows that belong to another thread, much less another process. The best you can do is post a message to the window to ask it nicely. The function response to the message by destroying the window, but the window is free to add a custom handler for th...

Here's a programming challenge: Evaluate the following recurrence relation efficiently for a given array [x0, …, xn−1] and integer k. Hint: Use dynamic programming. In words: If the array has only two elements, then the result is the average of the two elements. If the array has more than two elements, then then t...

A customer wanted to check that their idea for solving a re-entrancy problem doesn't have any hidden gotchas. We have a window which processes incoming work. One of our work items enters a modal loop, and if new work gets posted to the window while the modal loop is running, our work manager gets re-entered, and Bad Things happen. Our propose...

For reasons I don't quite understand, the only functions in GDI and USER which create GDI regions are the functions with in their name, like or . All the other functions which return a region require you to pass an existing region to use as the output. I can see this being useful for , because you can set your output region to be equal to one ...

A customer asked whether the function can ever return . Their code uses for special purposes, and it would be bad if that was ever returned as the GUID for an object. "Can we assume that never returns ? Or should we test the return value against , and if it is equal, then call and try again?" Some people started running a bunch of times and o...

Just for fun, today's Little Program is going to generate set partitions. (Why? Because back in 2005, somebody asked about it on an informal mailing list, suggesting it would be an interesting puzzle, and now I finally got around to solving it.) The person who asked the question said, Below we show the partitions of [4]. The periods separate ...

You can, but the function needs to be linked in.

A customer wanted to know whether had a problem with Unicode. A problem with it? Quite the contrary. loves Unicode! In fact, if you call the ANSI version, it converts the strings to Unicode and then finishes the work in Unicode. Okay, here's the customer's problem. We have a custom application written in managed code. When we launch the p...

A customer was writing a program in (and this is what they said) "32 bit C++ .Net 4.0" which displayed the contents of a directory, and they wanted to filter out items such as hidden files and protected operating system files (also known as super-hidden files) based on the user's current Explorer preferences. Furthermore, they wanted to show local...

The interface accepts bulk operations in the form of an . So how do you take a list of file names and convert them into an ? There is no function, but there is a , and we know how to convert a path to an ID list, namely via . So lets snap two blocks together. The template function takes an array of paths and starts by creating a correspon...