HID keyboard Unhandled key code 10036 !

[ChrisW67]

but it just gives me thre errors while compile:

C:\Qt\Projects\Sources\Inventory\main.cpp:-1: error: error: undefined reference to 'vtable for MyAppNativeEventFilter'
:-1: error: the vtable symbol may be undefined because the class is missing its key function
:-1: error: linker command failed with exit code 1 (use -v to see invocation)

C:\Qt\Projects\Sources\Inventory\main.cpp:-1: error: error: undefined reference to 'vtable for MyAppNativeEventFilter'
:-1: error: the vtable symbol may be undefined because the class is missing its key function
:-1: error: linker command failed with exit code 1 (use -v to see invocation)

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Your code declares the existence MyAppNativeEventFilter and its nativeEventFilter() function but does not provide an implementation. The abstract class requires an implementation of the nativeEventFilter() function. A minimal implementation could just return false; something like:

// Declare
class MyAppNativeEventFilter  : public QAbstractNativeEventFilter
{
    virtual bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override 
};
 
// Implement
bool MyAppNativeEventFilter::nativeEventFilter(const QByteArray &eventType, void *message, long *result) override 
{
    return false;
}

// Declare
class MyAppNativeEventFilter  : public QAbstractNativeEventFilter
{
    virtual bool nativeEventFilter(const QByteArray &eventType, void *message, long *result) override 
};

// Implement
bool MyAppNativeEventFilter::nativeEventFilter(const QByteArray &eventType, void *message, long *result) override 
{
    return false;
}

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