flags

So in C++/C# you can create flags enums to hold multiple values, and storing a single meaningful integer in the database is, of course, trivial. In Java you have EnumSets, which appear to be quite a nice way to pass enums around in memory, but how do you output the combined EnumSet to an integer for storage? Is there another way to approach this? // From Adamski's answer public static <E extends Enum<E>> int encode(EnumSet<E> set) { int ret = 0; for (E val : set) { ret |= 1 << val.ordinal(); } return ret; } @SuppressWarnings("unchecked") private static <E extends Enum<E>> EnumSet<E> decode(int

In my project, I create a form with the opacity controlled by the user. If the form was fully transparent the mouse events 'fell through' (without my intervention), otherwise my form handled them. After reading this question and overriding the CreateParams property to set the WS_EX_TRANSPARENT flag on my form, it now allows mouse events to fall through when the opacity is any value <255. This is exactly what I want, but it concerns me that I don't understand why it works. From what I've read, WS_EX_TRANSPARENT is meant to make the form appear transparent by 'stealing bits' from the form below

Recently I just came across this term and I had no idea as to what purpose it serves? I am little unsure about when to use a flag variable and how to go about it? I Googled it but there were not any specific examples related to it (in the context of JavaScript). Flag Variables Defined and Uses says: A flag variable, in its simplest form, is a variable you define to have one value until some condition is true, in which case you change the variable's value. It is a variable you can use to control the flow of a function or statement, allowing you to check for certain conditions while your

I used: getWindow().addFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); How do I resume to Default state (no-keep-on)? I think this should do it: getWindow().clearFlags(android.view.WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); See API for details. If you instead set a flag android:keepScreenOn="true" ( documentation ) only on the views that need to keep the screen on, you wouldn't need to reset the flag manually. Another approach getWindow().setFlags(this.getWindow().getFlags() & ~WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); Also read this and you can also set