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Programación / Programación Visual Basic / Re: loadpicture de variable con contenido del archivo ¿como?
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en: 16 Mayo 2008, 17:16 pm
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Bueno depiende del uso. Yo creo k usar un Byte array es mas directo. Una string es Unicode... Voy intentar buscar algo k especifique alguna diferencia en el rendimento para darte una respuesta mas clara.
Saludos
recien hice unas pruevas con un archivo bien grande y si la diferencia es muy notable casi el doble de tiempo igual me queda la duda si quisiera encontrar una marca en un array como haria? con copymemory ? , ni idea Saludos
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512
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Programación / Programación Visual Basic / Re: loadpicture de variable con contenido del archivo ¿como?
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en: 16 Mayo 2008, 16:53 pm
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hola creo que lo que busca es esto http://www.activevb.de/tipps/vb6tipps/tipp0556.htmlTughack ahora ya que esta el tema tengo una duda hay diferencia en rendimiento de cargar un archivo a un string o un array ? por ejemplo Option Explicit
Private Sub Form_Load()
Dim StrImagen As String Dim ArrImagen() As Byte '----------------- cargar a un string Open "C:\foto.bmp" For Binary As #1 StrImagen = Space(LOF(1)) Get #1, , StrImagen Close #1 Debug.Print Len(StrImagen) '----------------- cargar a un array Open "C:\foto.bmp" For Binary As #1 ReDim ArrImagen(LOF(1)) Get #1, , ArrImagen Close #1 Debug.Print UBound(ArrImagen)
End Sub
Yo mayormente estoy usando String ya que si tengo que buscar un valor/cadena lo hago con la funcion instr() pero si tuviera que buscarlo en un array pues tuviera que recorrer todo este y encontrar bits por bits y esto es lentisimo, o hay alguna forma mas eficiente para encontrar un conjunto de bits en un array? Saludos
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513
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Programación / Programación Visual Basic / Re: PNG Splash Screen (GDI+)
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en: 16 Mayo 2008, 16:26 pm
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yo tngo un splash en PNG que dice "Cargando" (elemental watson ) y "..." (tres o cuatro puntos" que son "animados" por un timer para mostrarle al usuario que la App nose ha colgado cargando y un label que hace como photoshop (muestra "Cargando fuentes", es un ejemplo, mi app no carga fuentes.) tengo la necesidad de mostrar controles o saber como insertar texto o imagenes sobre el form. PD: ahhh.. si pudiera hacerce una aparicion con transparencia (digamos "fade-in" d form) seria excelente. hola, si no mas no se puede ,hay que hacer algunas cositas par pueda hacer lo que queres pero, miralo de este punto todo eso va a retardar mas el proceso de cargado de tu proyecto y creo que en una aplicacion esto ya pasa a ser denso, yo cre que la idea es mas que nada mostrar un instante el logo y en el menor posible e ir directamente a la aplicacion, o acaso no te gustaria que cuando prendes tu pc te aparezca todo de una y no tener que esperar que cargue el sistema operativo. Saludos
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514
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Programación / Programación Visual Basic / Re: Uso de API's ReadProcessMemory y WriteProcessMemory
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en: 7 Mayo 2008, 03:36 am
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hola Seba123neo utilizando sendmensage a secas si va a dar error, encambio con estas dos apis no da error pero el problema es que produce un incremento en el uso de la memoria del la aplicacion que porta el listview. (esto con algunos msg no todos) ya que esta dejo aca el que havia puesto en canalvisualbasic.net 1 Saver cuantos items hay 2 Saver cual esta selecionado 3 Selecionar un items 4 ver el texto del items o del subitems el modulo Option Explicit
Private Type LVITEM mask As Long iItem As Long iSubitem As Long state As Long stateMask As Long pszText As Long cchTextMax As Long iImage As Long lParam As Long iIndent As Long End Type
Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long Private Declare Function VirtualAllocEx Lib "kernel32" (ByVal hProcess As Long, ByVal lpAddress As Long, ByVal dwSize As Long, ByVal flAllocationType As Long, ByVal flProtect As Long) As Long Private Declare Function VirtualFreeEx Lib "kernel32" (ByVal hProcess As Long, lpAddress As Any, ByVal dwSize As Long, ByVal dwFreeType As Long) As Long Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long Private Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hwnd As Long, lpdwProcessId As Long) As Long
Private Const LVIF_IMAGE = &H2 Private Const LVIF_TEXT = &H1 Private Const LVM_FIRST As Long = &H1000 Private Const LVM_GETITEM As Long = (LVM_FIRST + 5) Private Const LVM_GETITEMCOUNT = (LVM_FIRST + 4) Private Const LVM_GETITEMSTATE = (LVM_FIRST + 44) Private Const LVIS_SELECTED = &H2 Private Const LVM_SETITEMSTATE = (LVM_FIRST + 43) Private Const LVIF_STATE = &H8&
Private Const PAGE_READWRITE = &H4& Private Const MEM_RESERVE = &H2000 Private Const MEM_COMMIT = &H1000 Private Const MEM_RELEASE = &H8000 Private Const PROCESS_VM_OPERATION = &H8 Private Const PROCESS_VM_READ = &H10 Private Const PROCESS_VM_WRITE = &H20
Private hWndlvw As Long
Function ListViewGetText(ByVal hwnd As Long, ByVal iSubitem As Integer, ByVal iItem As Integer) As String Dim lngProcID As Long, lngProcHandle As Long Dim typLvItem As LVITEM, strLvItem As String Dim lngVarPtr1 As Long, lngVarPtr2 As Long Dim lngMemVar1 As Long, lngMemVar2 As Long Dim lngMemLen1 As Long, lngMemLen2 As Long Call GetWindowThreadProcessId(hwnd, lngProcID) If lngProcID <> 0 Then lngProcHandle = OpenProcess(PROCESS_VM_OPERATION Or PROCESS_VM_READ Or PROCESS_VM_WRITE, False, lngProcID) If lngProcHandle <> 0 Then strLvItem = String(255, vbNullChar) lngVarPtr1 = StrPtr(strLvItem) lngVarPtr2 = VarPtr(typLvItem) lngMemLen1 = LenB(strLvItem) lngMemLen2 = LenB(typLvItem) lngMemVar1 = VirtualAllocEx(lngProcHandle, 0, lngMemLen1, MEM_RESERVE Or MEM_COMMIT, PAGE_READWRITE) lngMemVar2 = VirtualAllocEx(lngProcHandle, 0, lngMemLen2, MEM_RESERVE Or MEM_COMMIT, PAGE_READWRITE) With typLvItem .cchTextMax = 255 .iItem = iItem .iSubitem = iSubitem .mask = LVIF_TEXT .pszText = lngMemVar1 End With Call WriteProcessMemory(lngProcHandle, ByVal lngMemVar1, ByVal lngVarPtr1, lngMemLen1, 0) Call WriteProcessMemory(lngProcHandle, ByVal lngMemVar2, ByVal lngVarPtr2, lngMemLen2, 0) Call SendMessage(hwnd, LVM_GETITEM, ByVal 0, ByVal lngMemVar2) Call ReadProcessMemory(lngProcHandle, ByVal lngMemVar1, ByVal lngVarPtr1, lngMemLen1, 0) strLvItem = StrConv(strLvItem, vbUnicode) strLvItem = Left(strLvItem, InStr(1, strLvItem, vbNullChar) - 1) ListViewGetText = strLvItem Call VirtualFreeEx(lngProcHandle, ByVal lngMemVar1, lngMemLen1, MEM_RELEASE) Call VirtualFreeEx(lngProcHandle, ByVal lngMemVar2, lngMemLen2, MEM_RELEASE) Call CloseHandle(lngProcHandle) End If End If End Function
Private Function EnumWindowsProc(ByVal hwnd As Long, ByVal lParam As Long) As Long hWndlvw = FindWindowEx(hwnd, 0&, "ListView20WndClass", "") EnumWindowsProc = (hWndlvw = 0) 'Stop when we find first listview End Function
' This demonstration example finds first child window with class "ListView20WndClass" ' which may not be what you want. Use your own method to find the real hWnd that you want Public Function FindListView() As Long EnumWindows AddressOf EnumWindowsProc, 0& FindListView = hWndlvw End Function
Public Function SelectedItem(ByVal hwnd As Long, ItemPos As Long) Dim lProcID As Long Dim hProc As Long Dim lxprocLVITEM As Long Dim LV_ITEM As LVITEM GetWindowThreadProcessId hwnd, lProcID ' Get the process ID in which the ListView is running If lProcID <> 0 Then hProc = OpenProcess(PROCESS_VM_OPERATION Or PROCESS_VM_READ Or PROCESS_VM_WRITE, False, lProcID) ' makwe sure we have read write permissions in the process space If hProc <> 0 Then lxprocLVITEM = VirtualAllocEx(hProc, 0, LenB(LV_ITEM), MEM_RESERVE Or MEM_COMMIT, PAGE_READWRITE) ' Grab enough memory in the other procedure's space to hold our LV_ITEM ' Set up our local LV_ITEM to change the selected item LV_ITEM.mask = LVIF_STATE LV_ITEM.state = True LV_ITEM.stateMask = LVIS_SELECTED ' Copy the local LV_ITEM into the space we reserved in the foreign process WriteProcessMemory hProc, ByVal lxprocLVITEM, ByVal VarPtr(LV_ITEM), LenB(LV_ITEM), 0 ' Now send the message, but pass the address of the copy of our LV_ITEM that now exists in the foreign process instead of our local versiony SendMessage hwnd, LVM_SETITEMSTATE, ItemPos, ByVal lxprocLVITEM ' Clean up VirtualFreeEx hProc, ByVal lxprocLVITEM, LenB(LV_ITEM), MEM_RELEASE CloseHandle hProc End If End If End Function
Function GetListViewCount(ByVal hwnd As Long) As Long 'this simply get number of items GetListViewCount = SendMessage(hwnd, LVM_GETITEMCOUNT, 0, ByVal 0) End Function Function GetItemSelected(hwnd As Long) As Long Dim i As Long, Index As Long For i = 1 To GetListViewCount(hwnd) Index = SendMessage(hwnd, LVM_GETITEMSTATE, i - 1, ByVal LVIS_SELECTED) If Index > 0 Then GetItemSelected = i Exit For End If Next End Function
y en un formulario con un listview y 4 botones Dim Handle As Long Dim Index As Long Private Sub Command1_Click() Index = InputBox("Selectiona el index") SelectedItem Handle, Index End Sub
Private Sub Command2_Click() Index = InputBox("Selectiona el index del cual quieres ver") MsgBox ListViewGetText(Handle, 0, Index) End Sub
Private Sub Command3_Click() MsgBox "el listview tiene " & GetListViewCount(Handle) & " Items" End Sub
Private Sub Command4_Click() MsgBox "El item selecionado es el " & GetItemSelected(Handle) End Sub
Private Sub Form_Load() ListView1.View = lvwList ListView1.HideSelection = False ListView1.ListItems.Add , , "hola" ListView1.ListItems.Add , , "Mansana" ListView1.ListItems.Add , , "Sapallo" ListView1.ListItems.Add , , "terotero" Handle = ListView1.hwnd End Sub
para sacar los iconos del listview tenes que hacer un sendmesage con la constante getimagelist , y despues usar lo podes usar con imagelistdraw (disculpa que escriva bien las apis es que estoy en laburo :}) Saludos
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516
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Programación / Programación Visual Basic / Re: Uso de API's ReadProcessMemory y WriteProcessMemory
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en: 6 Mayo 2008, 21:37 pm
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Option Explicit Dim SWs As New SHDocVw.ShellWindows Dim IE As SHDocVw.InternetExplorer Private Sub Command1_Click() For Each IE In SWs DoEvents If IE.readyState = READYSTATE_COMPLETE Then If IE.LocationURL = " http://www.elhacker.net/" Then Text1.Text = IE.document.body.innerHTML Exit For End If End If Next IE End Sub jaja buenisimo era eso, ahora que recuerdo Cobein en una vuelta me habia pasado algo parecido con SHDocVw.ShellWindows pero no savia como hacer el For Each IE In SWs, la verdad que me la iva a complicar mucho, lamentablemnte esto no va a servir obtener los script o para firefox u opera. pero bueno me safa. Saludos y muchas gracias PD:el que quiera puede seguir agregando algunos ejemplos mas de ReadProcessMemory y WriteProcessMemory para tenerlos a mano, no estarian de mas.
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517
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Programación / Programación Visual Basic / Re: Uso de API's ReadProcessMemory y WriteProcessMemory
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en: 6 Mayo 2008, 03:01 am
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Poned dudas mas concretas no se si me lo preguntas a mi?, yo en realidad si entiendo, tampoco soy un experto, pero lo que propuese fue codear un poco. yo utilize estas apis en algunas ocasiones para pasar msg a controles como listview del systema, u otras. en fin si tuviera que decirte una duda en concreto, ahora, que por falta de tiempo no me puse a imbestigar, es como obtener el codigo html del iExplorer, se que de alguna manera se puede porque tengo una aplicacion en vb que lo hace(lamentablemente no tengo el codigo) la duda es en que parte de la memoria tendria que leer y de que tamaño. Saludos
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518
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Programación / Programación Visual Basic / Re: Uso de API's ReadProcessMemory y WriteProcessMemory
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en: 5 Mayo 2008, 21:54 pm
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hola yo mucho no te puedo explicar del tema, pero, como el tema es interesante tambien estoy buscando algo de info, porque quiero obtener el codigo html de el IExplorer para modificarlo y devolverselo, pero bueno todavía no saco nada, te paso dos ejemplo que vale mas que 1000 palabras. el primero es el del api guide (el que te nombraba Seba123neo) agrega un Command1 ' MaRi� G. Serrano. 16/Abril/2002.- Private Const PROCESS_ALL_ACCESS As Long = &H1F0FFF Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hWnd As Long, lpdwProcessId As Long) As Long Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal bInheritHandle As Long, ByVal dwProcessId As Long) As Long Private Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, ByVal lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long Private Declare Function WriteString Lib "kernel32" Alias "WriteProcessMemory" (ByVal hProcess As Long, ByVal lpBaseAddress As Any, ByVal lpBuffer As Any, ByVal nSize As Long, ByVal lpNumberOfBytesWritten As Long) As Long Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long 'Private Declare Function WriteValue Lib "kernel32" Alias "WriteProcessMemory" (ByVal hProcess As Long, ByVal lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, ByVal lpNumberOfBytesWritten As Long) As Long
Private Sub Command1_Click() Dim str As String, MyString As String MyString = "HELLO" 'in this case I read the memory of my own process MsgBox "MyString= " & MyString str = ReadMemory(Me.hWnd, StrPtr(MyString), LenB(MyString), "BYE!!") MsgBox "Now, MyString=" & MyString & vbCr & "Old Value= " & str End Sub Private Function ReadMemory(hWnd As Long, Address As Long, Bytes As Long, Optional strReplaceWith As String) As String 'Runs For Not Unicode Strings (VB-Strings) On Error Resume Next Dim pId As Long ' Used to hold the Process Id Dim pHandle As Long ' Holds the Process Handle Dim bytValue As Long 'Stores the value of a byte in the memory Dim i As Long Dim Text As String ' Get the ProcId of the Window GetWindowThreadProcessId hWnd, pId
' use the pId to get a handle pHandle = OpenProcess(PROCESS_ALL_ACCESS, False, pId) If (pHandle = 0) Then 'MsgBox "Unable to open process!" Exit Function End If If Address = 0 Then Exit Function For i = 1 To Bytes Step 2 ' Read Byte to Byte ReadProcessMemory pHandle, Address + i - 1, bytValue, 1, 0& 'value now contains the long value of the byte located in [Address + i - 1] pos. 'ReadMemory is a string... ReadMemory = ReadMemory & Chr$(bytValue) Next 'to write numeric values you can ..(Must) use WriteValue API If LenB(strReplaceWith) <> 0 Then 'No Unicode!! WriteString pHandle, Address, StrPtr(strReplaceWith), LenB(strReplaceWith), 0& End If 'Close the Handle CloseHandle pHandle End Function
otro agrega 3 labels, 3 textboxes y 1 commandbutton en un form Lo que hace es cambiar el caption del boton retroceso de la calculadora por otro. Option Explicit
Private Type OSVERSIONINFO dwOSVersionInfoSize As Long dwMajorVersion As Long dwMinorVersion As Long dwBuildNumber As Long dwPlatformId As Long szCSDVersion As String * 128 End Type
Private Type MEMORY_BASIC_INFORMATION ' 28 bytes BaseAddress As Long AllocationBase As Long AllocationProtect As Long RegionSize As Long State As Long Protect As Long lType As Long End Type
Private Type SYSTEM_INFO ' 36 Bytes dwOemID As Long dwPageSize As Long lpMinimumApplicationAddress As Long lpMaximumApplicationAddress As Long dwActiveProcessorMask As Long dwNumberOrfProcessors As Long dwProcessorType As Long dwAllocationGranularity As Long wProcessorLevel As Integer wProcessorRevision As Integer End Type
Private Declare Function GetVersionEx Lib "kernel32" Alias "GetVersionExA" (LpVersionInformation As OSVERSIONINFO) As Long Private Declare Function VirtualQueryEx& Lib "kernel32" (ByVal hProcess As Long, lpAddress As Any, lpBuffer As MEMORY_BASIC_INFORMATION, ByVal dwLength As Long) Private Declare Sub GetSystemInfo Lib "kernel32" (lpSystemInfo As SYSTEM_INFO) Private Declare Function OpenProcess Lib "kernel32" (ByVal dwDesiredAccess As Long, ByVal blnheritHandle As Long, ByVal dwAppProcessId As Long) As Long Private Declare Function CloseHandle Lib "kernel32" (ByVal hObject As Long) As Long Private Declare Function ReadProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long Private Declare Function WriteProcessMemory Lib "kernel32" (ByVal hProcess As Long, lpBaseAddress As Any, lpBuffer As Any, ByVal nSize As Long, lpNumberOfBytesWritten As Long) As Long
Private Declare Function GetWindowThreadProcessId Lib "user32" (ByVal hWnd As Long, lpdwProcessId As Long) As Long Private Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As Long, ByVal lpWindowName As Long) As Long Private Declare Function GetParent Lib "user32" (ByVal hWnd As Long) As Long Private Declare Function GetWindow Lib "user32" (ByVal hWnd As Long, ByVal wCmd As Long) As Long Const GW_HWNDNEXT = 2
Private Declare Function InvalidateRect Lib "user32" (ByVal hWnd As Long, ByVal lpRect As Long, ByVal bErase As Long) As Long Const PROCESS_VM_READ = (&H10) Const PROCESS_VM_WRITE = (&H20) Const PROCESS_VM_OPERATION = (&H8) Const PROCESS_QUERY_INFORMATION = (&H400) Const PROCESS_READ_WRITE_QUERY = PROCESS_VM_READ + PROCESS_VM_WRITE + PROCESS_VM_OPERATION + PROCESS_QUERY_INFORMATION
Const MEM_PRIVATE& = &H20000 Const MEM_COMMIT& = &H1000
Private Sub Command1_Click() Dim pid As Long, hProcess As Long, hWin As Long Dim lpMem As Long, ret As Long, lLenMBI As Long Dim lWritten As Long, CalcAddress As Long, lPos As Long Dim sBuffer As String Dim sSearchString As String, sReplaceString As String Dim si As SYSTEM_INFO Dim mbi As MEMORY_BASIC_INFORMATION sSearchString = Text2 sReplaceString = Text3 & Chr(0) If IsWindowsNT Then 'NT store strings in RAM in UNICODE sSearchString = StrConv(sSearchString, vbUnicode) sReplaceString = StrConv(sReplaceString, vbUnicode) End If pid = Shell(Text1) 'launch application (calc.exe in this sample) hWin = InstanceToWnd(pid) 'get handle of launched window - only to repaint it after changes 'Open process with required access hProcess = OpenProcess(PROCESS_READ_WRITE_QUERY, False, pid) lLenMBI = Len(mbi) 'Determine applications memory addresses range Call GetSystemInfo(si) lpMem = si.lpMinimumApplicationAddress 'Scan memory Do While lpMem < si.lpMaximumApplicationAddress mbi.RegionSize = 0 ret = VirtualQueryEx(hProcess, ByVal lpMem, mbi, lLenMBI) If ret = lLenMBI Then If ((mbi.lType = MEM_PRIVATE) And (mbi.State = MEM_COMMIT)) Then ' this block is In use by this process If mbi.RegionSize > 0 Then sBuffer = String(mbi.RegionSize, 0) 'Read region into string ReadProcessMemory hProcess, ByVal mbi.BaseAddress, ByVal sBuffer, mbi.RegionSize, lWritten 'Check if region contain search string lPos = InStr(1, sBuffer, sSearchString, vbTextCompare) If lPos Then CalcAddress = mbi.BaseAddress + lPos Me.Show ret = MsgBox("Search string was found at address " & CalcAddress & "." & vbCrLf & "Do you want to replace it?", vbInformation + vbYesNo, "VB-O-Matic") If ret = vbYes Then 'Replace string in virtual memory Call WriteProcessMemory(hProcess, ByVal CalcAddress - 1, ByVal sReplaceString, Len(sReplaceString), lWritten) 'Redraw window InvalidateRect hWin, 0, 1 End If Exit Do End If End If End If 'Increase base address for next searching cicle. Last address may overhead max Long value (Windows use 2GB memory, which is near max long value), so add Error checking On Error GoTo Finished lpMem = mbi.BaseAddress + mbi.RegionSize On Error GoTo 0 Else Exit Do End If Loop Finished: CloseHandle hProcess End Sub
Private Sub Form_Load() Caption = "VB-O-Matic" Label1 = "Start application:" Label2 = "String to find:" Label3 = "Replace with:" Text1 = "Calc.exe" Text2 = "Retroceso" Text3 = "VB-O-Matic" Command1.Caption = "&Launch It!" End Sub
Private Function InstanceToWnd(ByVal target_pid As Long) As Long Dim test_hwnd As Long Dim test_pid As Long Dim test_thread_id As Long test_hwnd = FindWindow(ByVal 0&, ByVal 0&) Do While test_hwnd <> 0 If GetParent(test_hwnd) = 0 Then test_thread_id = GetWindowThreadProcessId(test_hwnd, test_pid) If test_pid = target_pid Then InstanceToWnd = test_hwnd Exit Do End If End If test_hwnd = GetWindow(test_hwnd, GW_HWNDNEXT) Loop End Function
Private Function IsWindowsNT() As Boolean Dim verinfo As OSVERSIONINFO verinfo.dwOSVersionInfoSize = Len(verinfo) If (GetVersionEx(verinfo)) = 0 Then Exit Function If verinfo.dwPlatformId = 2 Then IsWindowsNT = True End Function
y bueno ya que esta el hilo abierto estaria lindo quien tenga otros ejemplo lo ponga a continuacion para hacer una pequeña recopilacion sobre el uso de estas dos apis.
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519
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Programación / Programación Visual Basic / Re: Multi threads con winsock o multiconexion
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en: 1 Mayo 2008, 22:19 pm
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bueno creo que esta solucionado no lo prove a grandes rasgos pero creo que va a ir bien, el problema es que ni el evento sendComplete ni el winsock.send crean un nuevo hilo, por lo tanto este pasa a puntero la ultima clase llamada asi que lo que hice fue llamar dentro del evento Sendcomplete un pulso de un timer para enviar el siguiente paquete, creo que es lo mas parecido a un multi threads que se puede hacer sin que casque el visual. bueno si a alguien le sirve el ejemplo o puede mejorarlo. multiconexion2.zip - Descargalo en UpSourceCode.com.arSaludos y muchas gracias
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520
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Programación / Programación Visual Basic / Re: Multi threads con winsock o multiconexion
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en: 1 Mayo 2008, 20:31 pm
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Y has probado crear una matriz en el cliente y en el server, de modo que cada server[a] este conectado a cada cliente[a]; y asi seria como usar varios winsocks, pero teniendo uno solo.
hola, si practicamente en el ejemplo que puse, es asi como lo estoy trabando, en verdad ya prove todas las formas que se me podian cruzar por la cabesa pero no encuentro la forma de enviar un archivo a mas de dos clientes a la ves. (utilizando este metodo de enviar el siguiente paquete despues del primero con el mentodod sendcomplete) Saludos
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