This project is designed to capture the Lyrics screen of WeSing (全民K歌).
本项目是为了捕获全民K歌的歌词画面。
WeSing set WS_EX_LAYERED, which causes the GDI or DXGI to not capture the window correctly.
Fortunately, PrintWindow with the PRINT_WINDOW_FLAGS(2) flag works.
全民K歌设置了 WS_EX_LAYERED 的窗口参数，这导致 GDI 或 DXGI 不能正确获取窗口。好消息是，PrintWindow 里带上 PRINT_WINDOW_FLAGS(2) 参数的话是可以工作的。
Meanwhile, WeSing would try to cover the window with white after receiving WM_PAINT message, considering vertical sync, white may not fill every row.
同时，全民K歌会在收到 WM_PAINT 窗口消息后用白屏盖住自己，考虑到垂直同步影响，甚至不是每行同时触发这样的机制。
This project tries to create a separated window with captured WeSing lyrics, and the new window could be captured by OBS or other capturing softwares.
本项目会创建一个独立的窗口，窗口内容是捕获的全民K歌歌词，并且该窗口可以被 OBS 或其他捕获软件捕获。