В чём ошибка

unit1.cpp
//---------------------------------------------------------------------------

#include <vcl.h>
#pragma hdrstop

#include "Unit1.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TForm1 *Form1;
HWND hwnd;
//---------------------------------------------------------------------------
__fastcall TForm1::TForm1(TComponent* Owner)
: TForm(Owner)
{


}
//---------------------------------------------------------------------------
void __fastcall TForm1::WMHotKey(TWM0x00F& WM_HOTKEY )
{

if(!(hwnd=FindWindow("SciCalc","Êàëüêóëÿòîð")))
{
WinExec("Calc",SW_SHOWNA);
hwnd=FindWindow("SciCalc","Êàëüêóëÿòîð");
}


void __fastcall TForm1::FormCreate(TObject *Sender)
{
bool RHKret = RegisterHotKey(Form1->Handle,
0x00F,
MOD_ALT,
int('X')
);
}
//---------------------------------------------------------------------------






unit1.h

//---------------------------------------------------------------------------

#ifndef Unit1H
#define Unit1H
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <StdCtrls.hpp>
#include <Forms.hpp>
//---------------------------------------------------------------------------
class TForm1 : public TForm
{
__published: // IDE-managed Components
void __fastcall FormCreate(TObject *Sender);
private: // User declarations
void __fastcall WMHotKey(TWMHotKey&);
public: // User declarations
__fastcall TForm1(TComponent* Owner);

BEGIN_MESSAGE_MAP
MESSAGE_HANDLER(WM_HOTKEY,TWMHotKey,WMHotKey);
END_MESSAGE_MAP(TComponent);

};
//---------------------------------------------------------------------------
extern PACKAGE TForm1 *Form1;
//---------------------------------------------------------------------------
#endif