Hola.
Una solución al problema que mencionas es:
.h
Código PHP:
...
private:
void __fastcall WMSysCommand(TWMSysCommand &msg);
BEGIN_MESSAGE_MAP
MESSAGE_HANDLER(WM_SYSCOMMAND, TWMSysCommand, WMSysCommand)
END_MESSAGE_MAP(TForm)
public:
...
.cpp
Código PHP:
// (intento imitar al form de tu imágen)
void __fastcall TForm1::FormCreate(TObject *Sender)
{
this->FormStyle = fsMDIForm;
this->WindowState = wsMaximized;
this->BorderIcons >> biMinimize >> biMaximize;
}
void __fastcall TForm1::WMSysCommand(TWMSysCommand &msg)
{
unsigned int const sysCode = msg.CmdType & 0xFFF0;
if (sysCode == SC_MOVE || sysCode == SC_RESTORE)
msg.Result = 0;
else
TForm::Dispatch(&msg);
}
Saludos
