wxFileDialog filename textbox appears as clipped - textbox

Question

I display an Open File dialog using the following code:
wxFileDialog fileDialog(
this,
wxEmptyString,
"E:\\Testfiles",
"SOME_TEST_FILE_WITH_LONG_NAME.txt",
"TXT files (*.txt)|*.txt",
wxFD_OPEN | wxFD_FILE_MUST_EXIST | wxFD_CHANGE_DIR);
if (fileDialog.ShowModal() == wxID_OK)
{
// do something with the file
}
Notice that I set the default filename to a long string (about 10 or more characters).
When the file dialog is displayed, the filename looks clipped.
But on inspection, it's not really clipped.
More like the starting point of the text is placed too much to the left.
When you place the cursor on the textbox, and scroll to the left, you get the complete filename.
Also, when you switch to a different window then return to the file dialog, it corrects itself and displays the complete filename.
This isn't really affecting the functionality of the file dialog.
This is more of an aesthetic issue.
But if there's a reason for this behavior or if there's a solution, I would like to know.
Thanks!
I'm using:
wxWidgets 3.1.0
Windows 10 Home 64-bit
UPDATE (2017/03/20):
I opened a ticket at wxTrac for this bug.
You can check it here:
http://trac.wxwidgets.org/ticket/17824.

Answer 1

This looks like a bug in wxWidgets, please try to reproduce it in the dialogs sample by making minimal changes to the wxFileDialog call which is already present there and open a ticket on wxTrac with the patch allowing to see the problem, so that someone could debug it.

Answer 2

As a temporary workaround (while an official resolution from wxWidgets is not yet available), calling CenterOnParent() after constructing the file dialog properly "scrolls" the filename so that it won't appear as "clipped".
wxFileDialog fileDialog(
this,
wxEmptyString,
"E:\\Testfiles",
"SOME_TEST_FILE_WITH_LONG_NAME.txt",
"TXT files (*.txt)|*.txt",
wxFD_OPEN | wxFD_FILE_MUST_EXIST | wxFD_CHANGE_DIR);
// fixes the clipped filename
fileDialog.CenterOnParent();
if (fileDialog.ShowModal() == wxID_OK)
{
// do something with the file
}