The function call sigsuspend resolves this problem by resetting the signal mask and putting the process to sleep in a single atomic operation.
函数调用sigsuspend通过重置信号掩码并使进程休眠一个单一的原子操作来解决这一问题。
Combines the color data for the source and destination bitmaps using the specified mask and raster operation.
使用指定的掩码和栅格操作混合源位图和目标位图的颜色数据。
The mask can also be adjusted during the scan mode of operation using the same control keys.
面具还可以调整扫描期间的运作模式使用相同的控制键。
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