sigpropsform.cpp

著名的SecureBlackBox控件完整源码

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

#include <vcl.h>
#pragma hdrstop

#include "SigPropsForm.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TfrmSignaturesProps *frmSignaturesProps;
//---------------------------------------------------------------------------
__fastcall TfrmSignaturesProps::TfrmSignaturesProps(TComponent* Owner)
        : TForm(Owner)
{
}
//---------------------------------------------------------------------------
void TfrmSignaturesProps::Initialize(TElPDFDocument* Document)
{
    cbSignatures->Items->Clear();
    editAuthorName->Text = "";
    editReason->Text = "";
    pSignatureInfo->Visible = false;
    for (int i = 0; i<Document->SignatureCount; i++)
        cbSignatures->Items->AddObject(Document->Signatures[i]->SignatureName, Document->Signatures[i]);
}
//---------------------------------------------------------------------------
void __fastcall TfrmSignaturesProps::cbSignaturesChange(TObject *Sender)
{
    if (cbSignatures->ItemIndex != -1)
    {
        TElPDFSignature* Sig = (TElPDFSignature*)(cbSignatures->Items->Objects[cbSignatures->ItemIndex]);
        if (Sig->AuthorName != "")
            editAuthorName->Text = Sig->AuthorName;
        else
            editAuthorName->Text = "<not specified>";
        if (Sig->Reason != "")
            editReason->Text = Sig->Reason;
        else
            editReason->Text = "<not specified>";
        lTimestamp->Caption = (AnsiString)"Timestamp: " + Sig->SigningTime;
        pSignatureInfo->Visible = true;
    }
    else
        pSignatureInfo->Visible = false;
}
//---------------------------------------------------------------------------
void __fastcall TfrmSignaturesProps::btnValidateClick(TObject *Sender)
{
    if (cbSignatures->ItemIndex != -1)
    {
        TElPDFSignature* Sig = (TElPDFSignature*)(cbSignatures->Items->Objects[cbSignatures->ItemIndex]);
        if (Sig->Validate())
            MessageDlg("The selected signature is VALID", mtInformation, TMsgDlgButtons()<<mbOK, 0);
        else
            MessageDlg("The selected signature is NOT VALID", mtWarning, TMsgDlgButtons()<<mbOK, 0);
    }
}
//---------------------------------------------------------------------------
void __fastcall TfrmSignaturesProps::btnExtractSignedClick(TObject *Sender)
{
    if (cbSignatures->ItemIndex != -1)
    {
        if (SaveDialog->Execute())
        {
            TFileStream* F = new TFileStream(SaveDialog->FileName, fmCreate);
            try
            {
                TElPDFSignature* Sig = (TElPDFSignature*)(cbSignatures->Items->Objects[cbSignatures->ItemIndex]);
                Sig->GetSignedVersion(F);
            }
            __finally
            {
                delete F;
            }
        }
    }
}
//---------------------------------------------------------------------------
void __fastcall TfrmSignaturesProps::btnOKClick(TObject *Sender)
{
    ModalResult = mrOk;
}
//---------------------------------------------------------------------------