MDI child frame and wxCheckListBox menu problem

[Örjan Persson]

Thank you for your time Chris! I'm using "Windows SDK for Vista",
Visual Studio 2005 and Windows XP. I just tested in VS6 and SDK 2003
R2, and the problem is not there anymore. Hm. I'll see if I can figure
out why.

Why I mixed the canvas and wxCheckListBox? Well, the canvas was
already there. I just tried to find the easiest way to reproduce the
problem, and that was by adding these two lines. Of course I'm not
doing it like this in my application. ;)
wxCheckListBox *checkListBox = new wxCheckListBox(this, -1);
checkListBox->Append(L"Test");

Regards,
Örjan

On 5/31/07, chris elliott <biol75 at york.ac.uk> wrote:
> I've tried this with 2.8.cvs and Visual C 6 and don't see any error
> messages. I 'd like to know more details of wxversion and compiler.
>
> Secondly, I don't understand what you are trying to do; normally you
> don't add both the canvas and the wxCheckListBox to the smae frame to
> occupy the same screen estate
>
> chris
>
> Örjan Persson wrote:
> > Hi,
> >
> > I'm having a problem getting a wxMDIChildFrame derived class' menu to
> > beeing painted correctly. It seems that some problem occurs when
> > Windows is trying to draw/measure the menu items due to an invalid
> > handle.
> >
> > I can reproduce the problem by adding the last two lines to the
> > constructor of the mdi sample project like this;
> >
> > MyChild::MyChild(wxMDIParentFrame *parent, const wxString& title)
> >       : wxMDIChildFrame(parent, wxID_ANY, title, wxDefaultPosition,
> > wxDefaultSize,
> >                         wxDEFAULT_FRAME_STYLE |
> > wxNO_FULL_REPAINT_ON_RESIZE)
> > {
> >    canvas = (MyCanvas *) NULL;
> >    my_children.Append(this);
> >
> >    // this should work for MDI frames as well as for normal ones
> >    SetSizeHints(100, 100);
> >
> >    // this triggers the measuring and font creation
> >    wxCheckListBox *checkListBox = new (this, -1);
> >    checkListBox->Append(L"Test");
> > }
> >
> > The wxCheckListBox::Append() seem to trigger the .. resulting in these
> > errors;
> > 15:53:49: ..\..\src\msw\dc.cpp(1758): 'GetTextExtentPoint32()' failed
> > with error 0x00000000 (the operation completed successfully.).
> > 15:53:49: ..\..\src\msw\dc.cpp(1758): 'GetTextExtentPoint32()' failed
> > with error 0x00000006 (the handle is invalid.).
> > 15:53:49: ..\..\src\msw\dc.cpp(1758): 'GetTextExtentPoint32()' failed
> > with error 0x00000006 (the handle is invalid.).
> >
> > If I don't use the wxCheckListbox, the menu seems to work. Anyone has
> > any clues?
> >
> > Regards,
> > Örjan
> >
> > ---------------------------------------------------------------------
> > To unsubscribe, e-mail: wx-users-unsubscribe at lists.wxwidgets.org
> > For additional commands, e-mail: wx-users-help at lists.wxwidgets.org
> >
> >
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: wx-users-unsubscribe at lists.wxwidgets.org
> For additional commands, e-mail: wx-users-help at lists.wxwidgets.org
>
>