Ingenious ideas are simple. Ingenious software is simple. Simplicity is the heart of the Unix philosophy. The more code lines you have removed, the more progress you have made. As the number of lines of code in your software shrinks, the more skilled you have become and the less your software sucks.
swhd registers global hotkeys and then executes a program or a internal function when the key combination is pressed. 100% hackable (or your money back).
Configuration is done with config.h. Read the comments in the generated config.h to edit it according to your needs. Defaults are stored in config.def.h.