c++ - 如何停止 wxProgressDialog 重新调整大小？

Question

我在 Windows 上使用 wxProgressDialog。每当我更改对话框中的文本时，对话框都会重新调整大小以最好地容纳文本，这会导致对话框频繁调整大小，这看起来很糟糕。

我尝试了 SetMinSize 和 SetSizeHints，但这些似乎没有效果。 SetSize 似乎也不起作用。

(有关信息，对话框显示文件传输的进度。在传输每个文件时，会显示其完整路径。这些差异很大，导致不断调整大小。)

我的代码基于样本中的这段代码:

static const int max = 100;

wxProgressDialog dialog("Progress dialog example",
                        // "Reserve" enough space for the multiline
                        // messages below, we'll change it anyhow
                        // immediately in the loop below
                        wxString(' ', 100) + "\n\n\n\n",
                        max,    // range
                        this,   // parent
                        wxPD_CAN_ABORT |
                        wxPD_CAN_SKIP |
                        wxPD_APP_MODAL |
                        //wxPD_AUTO_HIDE | // -- try this as well
                        wxPD_ELAPSED_TIME |
                        wxPD_ESTIMATED_TIME |
                        wxPD_REMAINING_TIME |
                        wxPD_SMOOTH // - makes indeterminate mode bar on WinXP very small
                        );

bool cont = true;
for ( int i = 0; i <= max; i++ )
{
    wxString msg;

    // test both modes of wxProgressDialog behaviour: start in
    // indeterminate mode but switch to the determinate one later
    const bool determinate = i > max/2;

    if ( i == max )
    {
        msg = "That's all, folks!\n"
              "\n"
              "Nothing to see here any more.";
    }
    else if ( !determinate )
    {
        msg = "Testing indeterminate mode\n"
              "\n"
              "This mode allows you to show to the user\n"
              "that something is going on even if you don't know\n"
              "when exactly will you finish.";
    }
    else if ( determinate )
    {
        msg = "Now in standard determinate mode\n"
              "\n"
              "This is the standard usage mode in which you\n"
              "update the dialog after performing each new step of work.\n"
              "It requires knowing the total number of steps in advance.";
    }

    // will be set to true if "Skip" button was pressed
    bool skip = false;
    if ( determinate )
    {
        cont = dialog.Update(i, msg, &skip);
    }
    else
    {
        cont = dialog.Pulse(msg, &skip);
    }

    // each skip will move progress about quarter forward
    if ( skip )
    {
        i += max/4;

        if ( i >= 100 )
            i = 99;
    }

    if ( !cont )
    {
        if ( wxMessageBox(wxT("Do you really want to cancel?"),
                          wxT("Progress dialog question"),  // caption
                          wxYES_NO | wxICON_QUESTION) == wxYES )
            break;

        cont = true;
        dialog.Resume();
    }

    wxMilliSleep(200);
}

if ( !cont )
{
    wxLogStatus(wxT("Progress dialog aborted!"));
}
else
{
    wxLogStatus(wxT("Countdown from %d finished"), max);
}

Answer 1

选择文件路径显示的大小。如果路径较短，则添加空格，如果路径较长，则替换为省略号 ( ... )

wxControl::Ellipsize 对此很有用(http://docs.wxwidgets.org/3.1/classwx_control.html#a0bb834cae2a8986aceddb89f84ef4ed1)