sendmessage无法跟踪进函数解决办法

sendmessage无法跟踪进函数 - C++ Builder / Windows SDK/API
void __fastcall OnSendFileList(TMessage &Msg);

BEGIN_MESSAGE_MAP
  VCL_MESSAGE_HANDLER(WM_SENDFILELIST, TMessage, OnSendFileList)
  VCL_MESSAGE_HANDLER(WM_SENDFILESTATUS, TMessage, OnSendFileStatus)
  VCL_MESSAGE_HANDLER(WM_RECEIVEREPLY, TMessage, OnReceiveReplay)
  VCL_MESSAGE_HANDLER(WM_BINDERROR, TMessage, OnBindError)
  VCL_MESSAGE_HANDLER(WM_LISTENERROR, TMessage, OnListenError)
  VCL_MESSAGE_HANDLER(WM_STARTLISTEN, TMessage, OnStartListen)
END_MESSAGE_MAP(TForm)

void __fastcall TfrmSendFile::OnStartListen(TMessage &Msg)
{
  ShowMessage('a');
  return;
}

我是这样定义的消息，但调试时，进不了函数里边，不知道为什么？



------解决方案--------------------

C/C++ code

//做了个测试没问题
void __fastcall TForm1::Button5Click(TObject *Sender)
{
  SendMessage((HWND)this->Handle ,WM_STARTLISTEN, 100, NULL );

}
//h
const DWORD WM_STARTLISTEN = WM_USER+ 100;
class TForm1 : public TForm
{
__published:    // IDE-managed Components
    TButton *Button5;
    void __fastcall Button5Click(TObject *Sender);

private:    // User declarations
    void __fastcall OnStartListen(TMessage &Msg);
    BEGIN_MESSAGE_MAP

                VCL_MESSAGE_HANDLER(WM_STARTLISTEN, TMessage, OnStartListen)
END_MESSAGE_MAP(TForm)

------解决方案--------------------

你要确认向Form窗口发送了WM_STARTLISTEN消息。