sending a picture trough WINSOCK

[Ultimasnake]

ok i want a program to send a screenshot of the desktop to a other computer within my network, i can astablish the connection get the screenshot and can send it.. but at arival it fails to work

i used this to send the picture :

Private Sub Command2_Click()
 Winsock1.SendData Picture1.Picture
End Sub

and to recieve it i use:

Private Sub Winsock1_DataArrival(ByVal bytesTotal As Long)
 Dim strBuff As String
   Winsock1.GetData strBuff, vbString
   Picture1.Picture = strBuff
End Sub

but i gives this error : Compile error: Type mismatch

[ZeroCool]

Try Changing the String That Holds The Data To A Variant.
I Can't Think Of Any Other Type that would work!

[sunnyl]

You cannot just use Winsock1.SendData Picture1.Picture.

Winsock sends out data as strings. The type returned by Picture1.Picture is a stdPicture object.

To send a picture, the easiest way is to actually send the file which the picture came from. If you don't have the picture file, you'll have to create a byte array from the picture and then paint the byte array straight back onto the other end's picturebox.

Plenty examples of both methods have been posted on the forums.

[Ultimasnake]

errr ok the As variant thing didn't work...
and i cant find a forum topic where they really change the picture into A byte array can you tell me how it is done?

[MrPolite]

eh, isnt it easier just to save the picture first and they start sending it as a file?!!!

[Ultimasnake]

nope i need to grab the screen of one computer and send it as fast as possible to another computer , saving would only take more time because it must have at least a refresh rate of .5 seconds or something..
on a 700 + mhz computer this might not be a problem
but on a 200 mhz computer saving would take up to much memory and time

[Frans C]

When using:
Winsock1.SendData Picture1.Picture
you would only send the default property of the picture object, which is its handle. This handle will not be valid on another computer.
You would need to extract the actual data from the picture. Search the forum for the GetDIBits API function. I am sure you will find some code you could use.

An alternative to writing your own code, is to use a freeware program like winvnc

[MrPolite]

oh well, how about getting the color of each pixel and sending it one by one (that would probably be slower )

[chander]

hey sunnyl u wrote tht picture can be converted in to byte array , i want to convert a picture from picture box to byte array .. to send to other PC how i can convert it ???

[jian2587]

UltimaSnake:

nope i need to grab the screen of one computer and send it as fast as possible to another computer , saving would only take more time because it must have at least a refresh rate of .5 seconds or something..
on a 700 + mhz computer this might not be a problem
but on a 200 mhz computer saving would take up to much memory and time

Use Video hook dont think dat's possible in VB, though

[fkauffman]

Hi,

hey sunnyl u wrote tht picture can be converted in to byte array , i want to convert a picture from picture box to byte array .. to send to other PC how i can convert it ???

I'm very interested in this, but I couldn't find any examples how to do this.

To send a picture, the easiest way is to actually send the file which the picture came from. If you don't have the picture file, you'll have to create a byte array from the picture and then paint the byte array straight back onto the other end's picturebox.

Plenty examples of both methods have been posted on the forums.

Does anyone know where I can find an example of this method?

Thanks for reading,

Fedor

[jian2587]

I thought this might be better:
Record a series of pictures, say, for about a second.
Put them altogether in a file.
Send it to another remote pc.
The remote pc reads the file and display the series of pictures
continuously while grabbing another file.

How's that?

[KayJay]

http://www.vbforums.com/showthread.p...hreadid=203570

HTH

[From denmark]

Hey , you have to split the file to chunks of ( i think - " 1024 " ) byte in order to send !

[akhileshbc]

This is 8 year old thread... I think there is no need of replying to this thread anymore...

[From denmark]

oooh ,,,out of date ,, why not clean up old stuff ??

[akhileshbc]

there will be no cleaning of old stuffs... because, others can search the forum for previously asked questions.... and, if it is cleared, then no use....