问题
Started up remote debugging a C++ project today on a Win 7 machine running in VMWare and was astonished to see the following pattern on a random memory location:
Who might code this (it's not me!) and for what reason?? Just curious if anyone has seen something like this.
回答1:
It looks like a rendered mask for a font (each character in a font (typeface+size+style) is rendered once in-memory, then blitted to the output surface) using 8bpp, which suggests you've got font anti-aliasing enabled.
I'm assuming your project involves a GUI, you might be looking at a shared-memory area that GDI uses for storing rasterized fonts.
If not, then this might just be leftover memory from a previous process or OS component that wasn't zeroed before being used by your application.
回答2:
It's hard to say. Possibly memory used to buffer some fonts (in this case, zeros), or even buffered printer or screen content.
来源：https://stackoverflow.com/questions/12309838/visual-patterns-in-memory