C++ builder 编程学习笔记

 最小化窗口：
  Application->Minimize();
关闭：
 Close();

打开文件：
void __fastcall TConverterForm1::AddFileActExecute(TObject *Sender)
{
    TTntOpenDialog *OpenDialog = new TTntOpenDialog(this);
    OpenDialog->Filter = GetOpenDlgFilter().c_str();
    OpenDialog->Title = L"Select Video File";
    OpenDialog->Options << ofAllowMultiSelect;

    vector<wstring> files;
    if (OpenDialog->Execute())
    {
        for (int i = 0; i < OpenDialog->Files->Count; i++)
        {
            files.push_back(OpenDialog->Files->Strings[i].c_bstr());
        }
    }
    delete OpenDialog;

    AddFiles(files, true);
}

对TntLV的操作：
TntLVEditing onEditting:
void __fastcall TConverterForm1::TntLVEditing(TObject *Sender,
      TListItem *Item, bool &AllowEdit)
{
    //让编辑框可见
    Item->MakeVisible(false);
    TntLV->Scroll(TntLV->Width, 0);
    Item->CancelEdit();

    m_pEditingItem = Item;

    int nCount = TntLV->Columns->Count;
    int nX = -GetScrollPos(TntLV->Handle, SB_HORZ);
    int nWidth = 0;
    for (int nCol = 0; nCol < nCount; nX += nWidth, nCol++)
    {
        nWidth = ListView_GetColumnWidth(TntLV->Handle, nCol);
        if (nCol == OUTPUT_NAME_COL)
            break;
    }
    if (nX < 0)
    {
        nWidth += nX;
    }

    edtInPlace->Visible = true;
    ActiveControl = edtInPlace;
    TRect Rect = Item->DisplayRect(drBounds);
    TPoint Pos;
    Pos.x = nX;
    Pos.y = Rect.Top;
    MapWindowPoints(TntLV->Handle, Handle, (POINT*)&Pos, 1);
    edtInPlace->SetBounds(Pos.x, Pos.y - 1, nWidth, Rect.Height() + 2);
    edtInPlace->Text = Item->SubItems->Strings[OUTPUT_NAME_COL - 1];
    edtInPlaceCurValidText = edtInPlace->Text;
}

TntLVInfoTip onInfoTip:
void __fastcall TConverterForm1::TntLVInfoTip(TObject *Sender,
      TListItem *Item, AnsiString &InfoTip)
{
    MuiItemInfo *info = (MuiItemInfo*)Item->Data;
    InfoTip = WideString(info->strSourceName.c_str());
}

TntLVColumnDragged onColumnDragged:
void __fastcall TConverterForm1::TntLVColumnDragged(TObject *Sender)
{
    edtInPlaceExit(NULL);
}

TntLVContextPopup OnContextPopup:
void __fastcall TConverterForm1::TntLVContextPopup(TObject *Sender,
      TPoint &MousePos, bool &Handled)
{
    TntLV->PopupMenu = (NULL != TntLV->Selected) ? PMItem : PMList;
}

TntLVSelectItem onSelectItem:
void __fastcall TConverterForm1::TntLVSelectItem(TObject *Sender,
      TListItem *Item, bool Selected)
{
    if (!Selected)
    {
        //需要直接调用，因为焦点切换会导致action无效
        PreviewStopExecute(NULL);
    }
    else
    {
        MuiItemInfo *pNodeDt = GetNodeDataFocused();
        UpdateTrimRange(TntLV->ItemFocused, pNodeDt);
    }
}

 

修改扩展名：
bool TConverterForm1::Acceptable(const wstring& file)
{
    //组合成*.ext模式
    wstring ext = L"*";
    wstring::size_type pos = file.rfind(L'.');
    if (wstring::npos != pos)
    {
        ext += file.substr(pos);
    }
    return AcceptThisFormat(ext);
}

字符串插入：
  wstring subfix = L"-";
            subfix += WideString(i).c_bstr();

            wstring n = name;
            n.insert(n.rfind(L'.'), subfix);

同上：
  wstring name = file.substr(file.rfind(L'//') + 1);
    wstring dest = name;
    wstring::size_type dpos = name.rfind(L'.');
    if (wstring::npos != dpos)
    {
        dest = dest.substr(0, dpos);
    }
    dest += ps->FormatExt;
    MakeUniqueItemName(dest);

MessageBox():
 MessageBox(Handle, msg.c_str(),  Application->Title.c_str(), MB_ICONINFORMATION|MB_OK);

Wstring 转换为 Char*:
 int n = WideCharToMultiByte(CP_ACP, 0, pi->strOutputFileName.c_str(), -1, NULL, 0, 0, 0);
//    char* pTXTFile = new char(pi->strOutputFileName.c_str());
    char pTXTFile[MAX_PATH];
    WideCharToMultiByte(CP_ACP, 0, pi->strOutputFileName.c_str(), -1, pTXTFile, n, 0, 0);

打开文件夹：
 OpenUrl(edtOutputFolder->Text.c_bstr());