pub unsafe extern "C" fn PhidgetFirmwareUpgrade_setOnProgressChangeHandler(
ch: PhidgetFirmwareUpgradeHandle,
fptr: PhidgetFirmwareUpgrade_OnProgressChangeCallback,
ctx: *mut c_void,
) -> PhidgetReturnCodepub unsafe extern "C" fn PhidgetFirmwareUpgrade_setOnProgressChangeHandler(
ch: PhidgetFirmwareUpgradeHandle,
fptr: PhidgetFirmwareUpgrade_OnProgressChangeCallback,
ctx: *mut c_void,
) -> PhidgetReturnCode