问题
I wish to build my own application which can send keyboard commands(messages) to the Windows OS.
For example when I press the combination ctrl+shift+n, I wish to launch the notepad.exe . How can I do that? Do you have some advice for me about the concept used.
I've read that is possible when are used keyboard hooks? That's the only way? Do you know a free and open-source application which does this as simple is possible?
回答1:
Your particular example can be done without any programming at all, by right clicking on Notepad, selecting Properties, and setting the "hot key" (various Windows versions might call it by a different name) to Ctrl+Shift+N.
If you still would like to write a program to do this, have a look at the RegisterHotKey Win32 API function.
回答2:
AutoHotkey is a free, open-source utility for Windows.
You can automate many tasks with the above utility, check it out.
回答3:
Things to bear in mind:
A system-wide keyboard hook requires the writing of a DLL. There's example keyboard hook code on my website here.
Hooks cannot be installed from a low to a high integrity level application in Vista and Windows 7/8/10. So there's no guarantee your hook will work, depending upon what the foreground application is when the key gets hit.
As Greg pointed out, a lot of the time, RegisterHotKey is a much simpler solution for this problem.
来源：https://stackoverflow.com/questions/1762377/keyboard-hook-in-windows-c-or-what