XPLMSimulateKeyPress
From X-Plane SDK
XPLMSimulateKeyPress
XPLM_API void XPLMSimulateKeyPress(
int inKeyType,
int inKey);
This function simulates a key being pressed for x-plane. The keystroke goes directly to x-plane; it is never sent to any plug-ins. However, since this is a raw key stroke it may be mapped by the keys file or enter text into a field.
WARNING: This function will be deprecated; do not use it. Instead use XPLMCommandKeyStroke.
X-Plane SDK