Macro

[Carat1]

How can I make a macro where like for example, when I press the F! key, it types in "Hello World."

  if (GetAsyncKeyState(VK_F1))
  {
    //type "Hello World";
  }

[jonnin]

I think you are asking:
how do I get a program to stay resident (system tray programs), listen for a hot-key, and send text as-if from the keyboard when hot-key is pressed.

IF so, build this little by little. First figure out how to spoof the keyboard message, get that working, then wrap it with the resident and hot-key action stuff, research those 2 topics one at a time...

I don't know how to do this anymore. I last did it in like win 98 and hesitate to try to show you now. But there are probably examples on the web; these type programs are fairly high demand by gamers and others.