Comments by Prakash1206

Prakash1206 14-Jan-17 6:53am View

Thanks for your answer & helpful links. this question has been answered here
we should not create a new instance of WpfControl

Prakash1206 6-Jul-16 23:16pm View

@KarstenK, sorry for delay in replying.

Thanks for your valuable answer.
when i try to free objects in that thread, it again crashes.
for ex: cap.release(); this causes crash. so any safe way to release objects?

Prakash1206 5-Jul-16 3:21am View

Thanks for nice explanation :)
while loading the layout, i had to remove previous content. so i thought dockPanel1 = nullptr; would do it. but it was the reason for above error.
i had to manually remove contents through following code

for (int index = dockPanel1->Contents->Count - 1; index >= 0; index--)
{
if (dynamic_cast<idockcontent^>(dockPanel1->Contents[index]) != nullptr)
{
IDockContent ^content = safe_cast<idockcontent^>(dockPanel1->Contents[index]);
content->DockHandler->Close();
}
}

I Hope it helps someone with same issue :)

Prakash1206 27-Jun-16 5:05am View

HiThanks for answering,
i couldn't follow second question's answer. i'm coding in C++/Cli.
so don't know about '=>' operator, i don't think its available in this language. also i cannot see 'First' function from MdiChildren in Visual studio.
Could you please explain your code bit more? so that i will try to convert to C++/Cli
Thanks & Regards

Prakash1206 24-Jun-16 11:39am View

Hi KarstenK
Thanks for your valuable answer, it sounds like a solution to this problem.
didn't knew about watchdog thread, but i can make out when thread it dead.. i used an integer and kept incrementing it until thread was dead (i turned off wifi)
now the problem is, if i use thread->Abort(); [an attempt to restart thread] it crashes! [error message is same as shown in question]

do u know any other method to overcome this headache?

Thanks

Prakash1206 19-Jan-16 12:17pm View

@Richard Thanks for your reply. i used 'try-catch' block and you were right, i had to put the libraries in the exe folder..i had extracted dll's into exe folder but it was expecting zip file!
anyways now its showing a new error..

DZ.MediaPlayer.Vlc.Exceptions.VlcTimeoutException: Timeout waiting required state.
at DZ.MediaPlayer.Vlc.VlcPlayer.waitForMediaState(VlcMediaInternal mediaInternal, VlcMediaState stateRequired)
at DZ.MediaPlayer.Vlc.VlcPlayer.startPlaying(VlcMediaPlayerInternal mediaplayer, VlcMediaInternal media)
at DZ.MediaPlayer.Vlc.VlcPlayer.PlayNext()
at DZ.MediaPlayer.Vlc.WindowsForms.VlcPlayerControl.Play(MediaInput mediaInput)
at Sample.MyForm.button2_Click_1(Object sender, EventArgs e) in c:\users\user\documents\visual studio 2013\projects\gui applications\sample\sample\myform.h:line 552

Prakash1206 17-Jan-16 14:12pm View

i know its been quite long time to your comment..
but i am not able get Vlc.DotNet.Core.Medias.dll
so i cannot use "using Vlc.DotNet.Core.Medias;

after downloading Vlc.DotNet i see only Core,Interops,Forms. where can i find Medias?
can someone upload Medias.dll? Thanks

Prakash1206 22-Sep-15 17:26pm View

Thanks for your reply.
I changed my code..
Added below lines

//i run demo(); after initilize components

public: void demo(){

aTimer = gcnew System::Timers::Timer();
aTimer->Interval = 100;
aTimer->Elapsed += gcnew System::Timers::ElapsedEventHandler(this, &MyForm::OnTimedEvent);
aTimer->AutoReset = true;
aTimer->Enabled = true;
GC::KeepAlive(aTimer);
aTimer->Start();
}

public: delegate void MyCallback(System::String^ str);
VideoCapture cap(0);
Mat image;
IplImage frame, *frame2;

public :System::Void OnTimedEvent(Object^ source, System::Timers::ElapsedEventArgs^ e)
{
MyForm ^f = gcnew MyForm();
MyCallback^ callback = gcnew MyCallback(f,&MyForm::run);
callback->Invoke("text");
}

private: System::Void run(System::String^ str){
cap >> image;
Console::WriteLine(str);
if (image.empty()) MessageBox::Show("empty pic"); else imshow("frame", image);
frame = image;
frame2 = &frame;
waitKey(33);
pictureBox1->Image = gcnew
System::Drawing::Bitmap(frame2->width, frame2->height, frame2->widthStep,
System::Drawing::Imaging::PixelFormat::Format24bppRgb, (System::IntPtr) frame2->imageData);
pictureBox1->Refresh();

}

everything is fine, but the problem is that i can see video from my webcam only from imshow() function
but i cannot see video in winforms picturebox
i did try commenting imshow(), still no change

Comments by Prakash1206 (Top 8 by date)