I have a problem with making a screenshot of the window BlueStacks (it's Android emulator) with some game playing in it.
Firstly I tried CopyFromScreen method and it works perfect. But after sometime I want to make a screenshot of a window, when it is not showing to do some other job during it.
Soon I found nice solution - PrintWindow, but for some reason it takes black screen capture (I can see the frame of the Bluestacks window, but black square inside).
I thought it was fault of some 3D in that game and tried to use SlimDX library, it's great, but it didn't help - it captures only showing pixels, not the nonactive window.
So, how can I get the screenshot of the window by its hWnd, when it is not active? Or maybe I can use other methods of recieving info from Bluestacks? Does it have any API? I need picture of the game to recognize numbers.
Any solution would be greatly appreciated!
You can use ADB commands:
adb shell /system/bin/screencap -p /sdcard/screenshot.png
adb pull /sdcard/screenshot.pngc:\screenshot.png
and your screenshot will be in C:\screenshot.png
for more you can see Android Debug Bridge.