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How to calculate dp from pixels in android programmatically [duplicate]
...ical density of the display", "This value does not exactly follow the real screen size" , "To obtain the current density for a specific display, use densityDpi" . However, now that I've tested both ways, both seem to work fine. Just try to prefer float or double instead of int, because int might los...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...omponent is an item that the app can use. It could be visible on the phone screen such as a button or label, or it could be non-visible, such as a camera or a sensor. Each component has a set of blocks that the programmer can use to control its behavior.
Figure 1. Blocks for an App Inventor app t...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...omponent is an item that the app can use. It could be visible on the phone screen such as a button or label, or it could be non-visible, such as a camera or a sensor. Each component has a set of blocks that the programmer can use to control its behavior.
Figure 1. Blocks for an App Inventor app t...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...omponent is an item that the app can use. It could be visible on the phone screen such as a button or label, or it could be non-visible, such as a camera or a sensor. Each component has a set of blocks that the programmer can use to control its behavior.
Figure 1. Blocks for an App Inventor app t...
扩展App Inventor：具有多点触控和手势检测功能 · App Inventor 2 中文网
...omponent is an item that the app can use. It could be visible on the phone screen such as a button or label, or it could be non-visible, such as a camera or a sensor. Each component has a set of blocks that the programmer can use to control its behavior.
Figure 1. Blocks for an App Inventor app t...
Capture screenshot of active window?
I am making a screen capturing application and everything is going fine. All I need to do is capture the active window and take a screenshot of this active window. Does anyone know how I can do this?
...
Clear terminal in Python [duplicate]
...oes any standard "comes with batteries" method exist to clear the terminal screen from a Python script, or do I have to go curses (the libraries, not the words)?
...
How do I run a node.js app as a background service?
...
This might not be the accepted way, but I do it with screen, especially while in development because I can bring it back up and fool with it if necessary.
screen
node myserver.js
>>CTRL-A then hit D
The screen will detach and survive you logging off. Then you can get i...
error C2440: “return”: 无法从“const Screen”转换为“Screen &” - C/...
error C2440: “return”: 无法从“const Screen”转换为“Screen &”转换丢失限定符。出错代码（例子来自c++ primer 4th）：Screen& Screen::display(std::ostream& os) const{ os << contents...转换丢失限定符。
出错代码（例子来自c++ primer 4th）：
Screen...
Animate change of view controllers without using navigation controller stack, subviews or modal cont
...ry *)launchOptions
{
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
MyViewController *vc = [[MyViewContoller alloc] init...];
self.transitionController = [[TransitionController alloc] initWithViewController:vc];
self.window.rootViewController = self.tr...