Hi All, I am having difficulty with a new image refreshing. I have a video running under wxMediaCtrl, at the same time ffmpeg is taking a snapshot of the video, which is displayed in a wxScrolledWindow on the right. Ffmpeg is running in a separate thread which has not yet completed taking the snap, so I temporarily use an empty bitmap with some text saying "don't panic" or it's equivalent. However when this temporary bitmap is displayed, it shows two partial images. A previous image plus part of the one I am trying to show. If I then flick between screen and flick back, the correct image is shown.
This is clearly a repaint problem and maybe to do with wxScrolledWindow,
because I see some special code for wxScrolledWindow around Drawing and
DCs. I was hoping there was some simple sort of "force repaint" command
but I can't see it.
Here is the code in question (following)
Regards
Steve
#
# Display thumbnail and controls in scrolling window.
# Pass: $self, filename (without path or suffix) as parameters , sequence as
global variable in $gl_edit_mode,
my $self = shift; # Pass $self
my $loc_file_name = shift; # Pass filename
my $loc_title = shift; # Pass file name
# Create thumbnail space
$self->{"Ctl_Video_Tab_Video_".$gl_edit_mode."_Bmp"} =
Wx::StaticBitmap->new($self->{Ctl_Post_Exam_Videos_Pane_2},
6000000+$gl_edit_mode,
# Wx::Bitmap->new("media\\". $loc_file_name .".jpg",
wxBITMAP_TYPE_ANY), wxDefaultPosition, wxDefaultSize, );
Wx::Bitmap->new("media\\empty_item.jpg", wxBITMAP_TYPE_ANY),
wxDefaultPosition, wxDefaultSize, );
$self->{"Ctl_Video_Tab_Video_".$gl_edit_mode."_Bmp"}->SetMinSize(Wx::Size->n
ew(152, 142));
# Create sizers
$self->{Ctl_Post_Exam_Videos_Grid_Sizer_3}->Add($self->{"Ctl_Video_Tab_Video
_".$gl_edit_mode."_Bmp"}, 0, 0, 0);
$self->{"Ctl_Post_Exam_Videos_Sizer_6_".$gl_edit_mode} =
Wx::BoxSizer->new(wxHORIZONTAL);
$self->{Ctl_Post_Exam_Videos_Grid_Sizer_3}->Add($self->{"Ctl_Post_Exam_Video
s_Sizer_6_".$gl_edit_mode}, 1, wxEXPAND, 0);
# Add title
$self->{"Ctl_Video_Tab_Title_".$gl_edit_mode."_Txt"} =
Wx::TextCtrl->new($self->{Ctl_Post_Exam_Videos_Pane_2}, wxID_ANY,
$loc_title, wxDefaultPosition, wxDefaultSize, );
$self->{"Ctl_Post_Exam_Videos_Sizer_6_".$gl_edit_mode}->Add($self->{"Ctl_Vid
eo_Tab_Title_".$gl_edit_mode."_Txt"}, 0, , 0);
# Add play button
$self->{"Ctl_Video_Tab_Play_".$gl_edit_mode."_Btn"} =
Wx::BitmapButton->new($self->{Ctl_Post_Exam_Videos_Pane_2},
1000000+$gl_edit_mode,
Wx::Bitmap->new("Images\\play.png", wxBITMAP_TYPE_ANY));
$self->{"Ctl_Video_Tab_Play_".$gl_edit_mode."_Btn"}->SetSize($self->{"Ctl_Vi
deo_Tab_Play_".$gl_edit_mode."_Btn"}->GetBestSize());
$self->{"Ctl_Post_Exam_Videos_Sizer_6_".$gl_edit_mode}->Add($self->{"Ctl_Vid
eo_Tab_Play_".$gl_edit_mode."_Btn"}, 0, , 0);
# Add event to activate play button
Wx::Event::EVT_BUTTON( $self,
$self->{"Ctl_Video_Tab_Play_".$gl_edit_mode."_Btn"}, \&on_media_select );
# Add delete button
$self->{"Ctl_Video_Tab_Delete_".$gl_edit_mode."_Btn"} =
Wx::BitmapButton->new($self->{Ctl_Post_Exam_Videos_Pane_2},
2000000+$gl_edit_mode,
Wx::Bitmap->new("Images\\pop_big_colose_n.bmp",
wxBITMAP_TYPE_ANY));
$self->{"Ctl_Video_Tab_Delete_".$gl_edit_mode."_Btn"}->SetMinSize(Wx::Size->
new(24, 24));
$self->{"Ctl_Post_Exam_Videos_Sizer_6_".$gl_edit_mode}->Add($self->{"Ctl_Vid
eo_Tab_Delete_".$gl_edit_mode."_Btn"}, 0, , 0);
# Add event to activate delete button
Wx::Event::EVT_BUTTON( $self,
$self->{"Ctl_Video_Tab_Delete_".$gl_edit_mode."_Btn"}, \&on_media_delete );
$self->{Ctl_Post_Exam_Videos_Grid_Sizer_3}->Layout();
}
<blocked::mailto:steve.cook...@sca-uk.com>
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