想請問各位大大，我用了FaxDev.h來寫網路傳真，但是它有個CallBackfunction 在msdn裡面的message有很多可是我看不太懂它要怎麼寫，不知道各位大大可不可以幫我看看，FaxLineCallBack裡面有很多Device message，不過我看了很久看不太懂我CallFunction之後要如何去呼叫這些message    //---------------------------------------------------------------------------    #include  #include #include #include #include #pragma hdrstop #include "Unit1.h" //--------------------------------------------------------------------------- #pragma package(smart_init) #pragma resource "*.dfm" TForm1 *Form1; HANDLE FaxHandle; //--------------------------------------------------------------------------- __fastcall TForm1::TForm1(TComponent* Owner) : TForm(Owner) { } //--------------------------------------------------------------------------- void __fastcall TForm1::FormCreate(TObject *Sender) { FAX_DEV_STATUS FaxStatus; FaxStatus.SizeOfStruct = sizeof(FAX_DEV_STATUS); FaxStatus.StatusId = 0; FaxStatus.StringId = 0; FaxStatus.PageCount = 0; FaxStatus.CSI = NULL; FaxStatus.CallerId = NULL; FaxStatus.RoutingInfo = NULL; FaxStatus.ErrorCode = 0; HLINEAPP LineAppHandle; HANDLE HeapHandle; PFAX_LINECALLBACK *LineCallbackFunction; FaxDevInitialize(LineAppHandle,&HeapHandle,LineCallbackFunction); LPDWORD DeviceCount; LPWSTR DeviceNamePrefix; LPDWORD DeviceIdPrefix; HANDLE CompletionPort; ULONG_PTR CompletionKey; FaxDevVirtualDeviceCreation(DeviceCount,DeviceNamePrefix,&CompletionPort,CompletionKey); FaxDate->DateTime = Now().DateTimeString(); } //--------------------------------------------------------------------------- void __fastcall TForm1::Button1Click(TObject *Sender) { if(OpenDialog1->Execute()) { FaxAttach->Text = OpenDialog1->FileName; } } //--------------------------------------------------------------------------- void __fastcall TForm1::Button2Click(TObject *Sender) { if(OpenDialog1->Execute()) { FaxCover->Text = OpenDialog1->FileName; } } //--------------------------------------------------------------------------- void __fastcall TForm1::BitBtn1Click(TObject *Sender) { //HANDLE FaxHandle; BOOL ch; ch = FaxDevEndJob(&FaxHandle); if(ch) Close(); } //--------------------------------------------------------------------------- void __fastcall TForm1::BitBtn2Click(TObject *Sender) { FAX_SEND FaxSend; FaxSend.SizeOfStruct = sizeof(FAX_SEND); FaxSend.FileName = WideString(FaxAttach->Text); FaxSend.CallerName = WideString("XXX"); FaxSend.CallerNumber = WideString("123456789"); FaxSend.ReceiverName = WideString(FaxName->Text); FaxSend.ReceiverNumber = WideString(FaxNumber->Text); //FaxSend.Reserved = 0; FaxSend.CallHandle = NULL; HLINE LineHandle; DWORD DeviceId; //HANDLE FaxHandle; HANDLE CompletionPortHandle; ULONG_PTR CompletionKey; BOOL ch; ch = FaxDevStartJob(LineHandle,DeviceId,&FaxHandle,&CompletionPortHandle,CompletionKey); if(ch) ShowMessage("開始傳送"); else ShowMessage("檢查你的資料是否正確"); //HANDLE FaxHandle; FAX_SEND_CALLBACK FaxSendCallback; FaxDevSend(&FaxHandle,&FaxSend,&FaxSendCallback); //HANDLE FaxHandle; FaxDevEndJob(&FaxHandle); } //--------------------------------------------------------------------------- void __fastcall TForm1::Button3Click(TObject *Sender) { FAX_RECEIVE FaxReceive; FaxReceive.SizeOfStruct=sizeof(FAX_RECEIVE) FAXDEVRECEIVE_SIZE; FaxReceive.FileName; FaxReceive.ReceiverName; FaxReceive.ReceiverNumber; FaxReceive.Reserved; HLINE LineHandle; DWORD DeviceId; //HANDLE FaxHandle; HANDLE CompletionPortHandle; ULONG_PTR CompletionKey; FaxDevStartJob(LineHandle,DeviceId,&FaxHandle,&CompletionPortHandle,CompletionKey); //HANDLE FaxHandle; HCALL CallHandle; FaxDevReceive(&FaxHandle,CallHandle,&FaxReceive); //HANDLE FaxHandle; FaxDevEndJob(&FaxHandle); } //--------------------------------------------------------------------------- void __fastcall TForm1::HandleLineCallbackFunction(HANDLE FaxHandle, DWORD hDevice,DWORD dwMessage,DWORD_PTR dwInstance,DWORD_PTR dwParam1, DWORD_PTR dwParam2,DWORD_PTR dwParam3) { FaxDevStartJob(&Handle); }