C / C++ / MFC

Send_KeyBoard_Control_C()
{
	HWND notepad = ::FindWindow(__T("NotePad"), NULL );
	if (notepad == NULL) {
		return;
	}
	if (!::SetForegroundWindow(notepad)) {
		return;
	}

	int sendCount = 0;
	INPUT input;

	// Press the "Ctrl" key
	ZeroMemory(&input, sizeof(INPUT));
	input.type = INPUT_KEYBOARD;
	input.ki.wVk = VK_CONTROL;
	input.ki.wScan = 0;
	input.ki.dwFlags = 0;
	sendCount += SendInput(1, &input, sizeof(INPUT));

	// Press the "C" key
	ZeroMemory(&input, sizeof(INPUT));
	input.type = INPUT_KEYBOARD;
	input.ki.wScan = 'C';
	input.ki.dwFlags = KEYEVENTF_UNICODE;
	sendCount += SendInput(1, &input, sizeof(INPUT));

	// Release the "C" key
	ZeroMemory(&input, sizeof(INPUT));
	input.type = INPUT_KEYBOARD;
	input.ki.wScan = 'C';
	input.ki.dwFlags = KEYEVENTF_UNICODE | KEYEVENTF_KEYUP;
	sendCount += SendInput(1, &input, sizeof(INPUT));

	// Release the "Ctrl" key
	ZeroMemory(&input, sizeof(INPUT));
	input.type = INPUT_KEYBOARD;
	input.ki.wVk = VK_CONTROL;
	input.ki.wScan = 0;
	input.ki.dwFlags = KEYEVENTF_KEYUP;
	sendCount += SendInput(1, &input, sizeof(INPUT));

	if ( sendCount != 4 ) {
		TRACE("fail\n");
	}
}

typedef uint32_t (*task_t)(uint8_t* data, uint16_t dataSizeBytes);
void queueTask(task_t task, uint8_t* data, uint16_t dataSizeBytes);

#include <functional>
using namespace std;
using taskCpp_t = function <uint32_t(uint8_t* dataPtr, uint16_t dataSizeBytes)>;
void queueTaskCpp(taskCpp_t task, uint8_t* data, uint16_t dataSizeBytes);

void queueTaskCpp(taskCpp_t task, uint8_t* data, uint16_t dataSizeBytes) {
    queueTask((task_t)task, NULL, 0);  // Compiler complains!!!
}

class A {
public:
  A () { cout << "A created" << endl; }
};

class B {
public:
  B () { cout << "Default B constructor" << endl; }
  B (A oa) { cout << "B created from A" << endl; }
  B (const B& other) { cout << "B copy constructor" << endl; }
};
int main()
{
  A aobj;
  B* bptr = new B (B (aobj));

  cout << "--------" << endl;

  B bobj (aobj);
  B* bbptr = new B (bobj);
}

A created
B created from A
--------
B created from A
B copy constructor