Showing tag results for Code

Say you have a collection of programs which work together. One of them is the "master" program that runs the show, and it has a bunch of "assistant" programs that it launches to accomplish various subtasks. These assistants are not meant to be run by themselves; they are meant to be run only by the master program. How do you design the assistant so...

A customer wanted to know how they could write a program that automatically checked and unchecked the box that appears on a file's property sheet on the General tab, clicking the Advanced button, and then checking or unchecking the item whose name keeps changing: The checkbox maps to the file attribute formally known as , and informally known as...

If you create a static control with initial contents (for example, by creating a or control in a dialog template), then the static control will load the contents upon creation and destroy the contents upon destruction. So at least in the case where you don't touch the static control, things will work automatically. But once you touch it, thing...

Today's Little Program uses UI Automation to cancel the Run dialog whenever it appears. Why? Well, it's not really useful in and of itself, but it at least provides an example of using UI Automation to wait for an event to occur and then respond to it. Okay, let's see what's going on here. The program registers a delegate with UI automation w...

A customer had some code which was experiencing memory allocation failures when calling (which maps to ). The function returns , and reports . However, there was still plenty of memory free: The customer was continuing their investigation but was looking for some pointers since the bug took a day to emerge. Could it be heap fragmentation? (The...

SendInput puts it at the end.

A customer liaison asked: After applying Service Pack 2 to Windows Server 2003, my customer found that a simple MFC application (just using the template, no customization) has two threads when it is supposed to have only one. After five minutes, one of the threads exits. This doesn't happen on Windows Server 2003 RTM or Windows Server 2003...

Today's Little Program executes a file as if it were a program, even though its extension is not EXE. The idea here is to prevent somebody from running your program by accident, so you give it an extension like . This is great for preventing somebody from running the program by mistake, but how do you do it on purpose? We're merely using the ...

Today, a correction to an earlier article on . When you lock memory with , it will remain locked even if all your threads are blocked. As noted in the Follow-up section at the end of the referenced article, the behavior of the operating system never changed. Virtually-locked pages were never unlocked in practice. What changed is that an implement...

Yes. When an I/O completes (whether synchronously or asynchronously), the event is signaled and completion status notifications are queued. The function can be used to wait on an I/O that has already completed; it will merely return immediately. If you ask whether the I/O has completed, and the I/O completed synchronously, it will correctly repo...