Old Question, But Help, Memory Could Not Be "read"
OK, this is really pissin me off, and i know u all have seen this before.
First off, i have:
VB6 32bit Version 8176
When i open a project and do object view, it crashes, When i add an About form, it crashes, and those are the only 2 instances where i know it WILL crash. Other than that, it crashes so many times i can not complete ANYTHING!
It says the memory could not be "read"
ive read some things, but i never find out how to fix it, HELP ME ASAP plz....
THNX
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Pleez, Read This!!! Matter Important! "Printing In "DOS Mode" Using "Shell" -not Happening, I Wonder
Hi
[I had to repost it since I have not received any replies for my earlier post]
I have a problem.
Following is the code :
Shell("c:windowscommand.com /c type " & App.path & "matrix.txt >prn")
where App.path is C:XYZ
when the above line is executed, the contents of "matrix.txt" is not printed on the printer. Instead, control just passes on to the next line.
So, to find out why, I modified the line thus.
Shell("c:windowscommand.com /K")
The above command takes me to the "command prompt". Here, when I give the command "type c:xyzmatrix.txt >prn", which is what the vbcode does, I get the message "file creation error".
So, I have identified the problem. Can anyone tell me why this "File creation error" occurs, And how to solve the problem?
Thanks for reading through.
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Thanks a bunch
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Hi all
This code,using readlong,writelong.
Property: Long
I need there a readtext memory.
Long OK,Byte OK,... OK,but I dont read "Text Values"
How to do this?
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
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'||-------------------------------------------------------------------------------------------------||
'|| The two next functions readwrite LONG values. ||
'|| LONG is a 32-bit(4 byte) datatype and can store values from -2,147,483,648 to 2,147,483,647 ||
'||-------------------------------------------------------------------------------------------------||
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ReadProcessMem ProcessHandle, Offset, Value, 4, 0&
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CloseHandle ProcessHandle
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Dim ProcessID As Long
Dim ProcessHandle As Long
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'You can add or write your own code here to customize your program.
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End If
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CloseHandle ProcessHandle
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Hi people.
I did for a long time a program that uses excel automation, so that from a template will create a final file with some data pulled from the database (with ADO). At the end and when the Excel file is ready to be saved I got in a couple of computers some problems. In the whole LAN have XP, but in these 2 computers we have SP2. I have checked the rights and are OK (I have even tried to save the Workbook under the Temp folder and also the same problem).
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Jaime
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----- Original Message -----
From: shankar [ babu ]
To: visualbasic-l@OpenITx.com
Sent: Wednesday, February 26, 2003 12:24 PM
Subject: "BeginTrans" , "CommitTrans" and "Rollback with dataenvironments
hello everybody,
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bye
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All,
I've had to get a terminal emulator together for work, supporting an embedded device. I've got everything working, but keep getting a "Runtime Errror 7, Out of Memory" any time I "stress test" the terminal or the terminal is left running for a long time. My stress test involves repeatedly sending a string from an embedded device at a high rate.
To start, I grabbed the example terminal emulator code from the VB6 pro examples section and modified it to my needs. As I run and stress test the program, I get the Out of Memmory error in the MSComm comEvReceive. Here is my code in this case statement.
**********************************************************
Select Case MSComm1.CommEvent
' Event messages.
Case comEvReceive
Dim Buffer As Variant
Do While MSComm1.InBufferCount > 0
Buffer = MSComm1.Input
error here ===>> ShowData txtTerm, (StrConv(Buffer, vbUnicode))
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If trapsig Then
bootmsg = bootmsg & Buffer
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**********************************************************
I've tried a variety of things to inclued:
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Private Declare Sub InitCommonControls Lib comctl32.dll"()
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Steve
VB6 Memory "leak" When Calling An Oracle Stored Procedure?
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When I call an Oracle 9i stored procedure that returns a REF CURSOR from VB6 I get what seems a memory "leak". Memory is allocated by the .exe to hold the recordset but is not immediately released when the recordset is closed, as expected. Give the machine a half hour or so and the memory alloacted to the exe will slowly drop to normal. However, I require immediate memory deallocation as we're talking about big recordsets of 100s of Megs. Interestingly, if I don't use the Stored proc and query the table directly using a "conn.Execute" then memory will be allocated and then instantly deallocated as per normal.
-------------------------------------------------------------------------------
---Stored proc (returns a large recordset)---
TYPE csResultSet IS REF CURSOR;
PROCEDURE Test (outCursor OUT csResultSet)
IS
BEGIN
OPEN outCursor FOR ('SELECT * FROM X');
END Test;
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Private Sub Command1_Click()
Dim conn As ADODB.Connection
Set conn = New ADODB.Connection
With conn
.Mode = adModeShareDenyNone
.CursorLocation = adUseClient
.ConnectionString = "Provider=MSDAORA.1;User ID=/; Password=; Data Source = xxx"
.Open
End With
Set rs = conn.Execute("Test")
rs.Close
Set rs = Nothing
conn.Close
Set conn = Nothing
End Sub
-------------------------------------------------------------------------------
I hope someone can give us a clue to what is going on because I'm going around the twist even more than I normally am,
cheers,
James
Memory Usage Of Different Data Types With "MSGBOX"- Resolved
Does the "MSGBOX" function coerce all values into a Variant String Type?
VB Code:
Private Sub Command1_Click()Dim lngVal As Long, intVal As IntegerDim dtVal As Date, strVal As StringstrVal = "ABCD"lngVal = CLng(12345678)intVal = CInt(1234)dtVal = Now MsgBox strValMsgBox lngValMsgBox intValMsgBox dtValEnd Sub
Do the four "Msgbox" functions use the same amount resources or is "Msgbox intVal" the least resource hungry?
I Use HOVERBUTTONS And On RUN TIME MODE, There Are Times Where An Error,"OUT OF MEMORY!"..
Hi, I'm new here and a newbie on programming VB ver 6.0 ... i am from the philippines and on my way to understanding the basic foundation of VB ... I am currently programming a system ... with this, I am using a HOVERBUTTON as one of my object tool ... whenever I run the program , while on RUN MODE/RUN TIME, there are instances that the compiler gives a message,"OUT OF MEMORY", can you tell me what's the main problem ? ... On my form, I use BITMAP pictures as my background .. and on the part of my COMMAND BUTTON TOOLBARS, I always insert a PICTURE BITMAP on each of them. Attached is an OUTPUT FORM of my system ...
"Out Of Memory - Too Many Global Symbols , Constant And Variables " Error In VB 3.0
I am facing some problem in Compiling a VB 3.0 project . When I try compliling the project then I am getting the following error -
"Out of Memory - too many global symbols"
Apart from this , another error that I am getting that says -
"The *.FRM files cannot add any more lines of code" . ( the exact words may be wrong - but this was the intent of the Message )
I have observed that I get these error if I try to add some EVENT HANDLERS , SUBROUTINES or FUNCTIONS to a *.FRM file .
I have never faced these problems while working on small sized VB 3.0 projects but for large sized projects as this particular one ( 4.25 MB - 28 FRM files & 25 BAS files) this problem is easily reproducable ( is it that in VB3.0 there is a limit to the size of code that we can add in *.FRM files for large sized projects )
I was building my project by keeping all the source files ( FRM , FRX , BAS ) and the MAK file directly under c:/ ( Root directory ) - but still I am facing this problem .
Even Restarting the System , trying it out in different machines & different O.S ( WIN 95 , WIN NT & WIN 2000 ) gives the same problem.
Can someone help me ...........
Problem With "Direct Memory Access To Do Graphics" By BillSoo Class BCHPicArray
I am trying to use two Knowledge Base articles to printscreen and then to get color of pixels via Direct Memory Access:
http://www.xtremevbtalk.com/showthread.php?t=11040
posted by Derek Stone
http://www.xtremevbtalk.com/showthread.php?t=25347
posted by BillSoo
So, when I try to use method
BCHPicArray.clsPicArray.ReadPixel(X, Y)
the error rises and array
BCHPicArray.clsPicArray.Data()
is not initialised as the compiler tolds me.
If I set preloaded Picture in Picture1 all is OK.
Maybe, I need first to save the pic on disk, but it is not the best workaround.
So, I do not understand where the memory leak occurs.
--------------------------------------------------------------------------
Dim pa As clsPicArray
Dim ps As clsPrintScreen
Dim stdPic As StdPicture
Private Sub Command1_Click()
Dim X&, Y&, t&
Set stdPic = ps.PrintScreen()
pa.LoadPicArray stdPic
'data() array in clsPicArray is OK now!!!
For Y = 0 To pa.UBoundY - 1
For X = 0 To pa.UBoundX - 1
'HERE is the error comes out,
'data() array in clsPicArray is <subscript out of range>!!!
MsgBox pa.ReadPixel(X, Y)
Next X
Next Y
End Sub
--------------------------------------------------------------------------
I have attached small project for testing the error. You need to switch your display in 16bit mode or 24 bit mode to make it working (original BillSoo class not support 32bit modern videocards).
Please, Anybody, can You look at it and help me?
Thank You.
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Here's the information I've found on this nag message along with working code.
Initial Problem:
Long-running macros in MSWord 2003 fill up the internal UnDo queue, resulting in "word has insufficient memory" messages at intervals. In my case, the messages came up approximately every 15-30 seconds, turning an unattended batch process into an interactive process.
Solution:
1)Clean out the hidden elements of the bookmarks collection at the beginning of the process. (See the StripHiddenBookmarks macro below.) For my purposes I chose to erase all bookmarks so the routine would start fresh.
2)In some routine that is called fairly frequently, insert the following two commands:
Application.ActiveDocument.UndoClear
Application.DisplayAlerts = wdAlertsNone
In my case, I put the commands in the routine that tests for whether the end of the document has been reached. I've included the code below in case someone finds it useful.
macro from Microsoft
Code:
Sub StripHiddenBookmarks()
Dim i As Long
ActiveDocument.Bookmarks.ShowHidden = True
For i = ActiveDocument.Bookmarks.Count to 1 Step -1
If Left$(ActiveDocument.Bookmarks(i).Name, 4) = "_Toc" Then
ActiveDocument.Bookmarks(i).Delete
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Application.ActiveDocument.UndoClear
Next i
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macro from Bob Price
Function testForEOF(Optional decVal As Long) As Long
'
' Function: testForEOF
'
' Description:
'
' Function returns 0 if we're at EOF, otherwise returns count of
' times to skip this call before next test. If decVal < 0 force a
'full test rather than allowing the more efficient skip test.
'
' Inputs:
' decVal Optional value by which to decrement the counter
'
' Outputs:
' See above.
'
'Notes:
'ctrEOF is a public variable.
'
'Typical Usage:
'' loop to remove trailing spaces from the current document
' Do While testForEOF(-1) <> 0' test every time
'If selection.Text <= " " Then
' selection.Delete
' ElseIf selection.Text > " " Then
' Exit Do ' puppies -- do we need this in some case?
' End If
' Loop
'
Dim xx, rval As Long, curPos As Long, endPos As Long, lval As Long
Dim ctr As Integer, funcName As String
On Error GoTo errLabel
funcName = "testForEOF"
ctrEOF = ctrEOF - decVal - 1
lval = ctrEOF
Application.ActiveDocument.UndoClear
Application.DisplayAlerts = wdAlertsNone
If ctrEOF <= 10 Or decVal < 0 Or (ctrEOF / 1000) = Int(ctrEOF / 1000) Then
curPos = getCurPosition: If curPos = 0 Then curPos = 1
endPos = getEndPosition
rval = endPos - curPos
If rval > 100 Then
rval = rval * 0.05
ElseIf rval < 2 Then
rval = 0
End If
ctrEOF = rval
Debug.Print "endPos - curPos: " & endPos - curPos & ", count til next test: " & rval
End If
exitLabel:
testForEOF = ctrEOF
Exit Function
errLabel:
msgbox "Error in " & funcName & ": " & Error
Resume exitLabel
End Function
A Question For Guru - Special Textbox With "Memory"
Dear All Friends,
I have a special interest in an interesting and useful tricky technique that all you may have come across. The textfields in IE can "memorize" commonly / recently typed texts - when you enter the first few characters, the "combo" will drop a list of strings typed in the past. Then the user can just press Tab to complete the sentence or use the mouse to select a suitable item to complete. That's very convenient. I am building a search form for a client record in a database. I think the user would like this much.
I wonder how can this be done? Are there some special controls available for this purpose or the developer needs to use a file or database to cache all those strings entered in the recent past.
HELP: "Out Of Memory" Error (and More) When Starting Visual Basic 6.0
Let me first start by saying that I am using WinXP and have been working with Visual Basic 6.0 for a few weeks now without any problems. Everytime I am done with it, I save the project and close the Visual Basic 6.0 window.
I wanted to work on my project last night, so I double-clicked on my desktop icon for Visual Basic V6.0 to open it up which I always did before) but this time I get the following errors (shown in order as they come up):
Error 1) Out of Memory : Continue? (I click YES button)
Error 2) Object Variable or With Block Variable Not Set: Continue? (I click YES button)
Error 3) Object Variable or With Block Variable Not Set: Continue? (I click YES button)
Error 4) Object Variable or With Block Variable Not Set: Continue? (I click YES button)
Error 5) Automation Error Catastrophic Failure (I click OK button)
Error 6) Object Variable or With Block Variable Not Set: Continue? (I click YES button)
After error (6), the Visual Basic 6.0 window does come up and I can open my project, edit the project, click RUN to test/debug my project and save my project.
Can someone please tell me what in the world is going on? Why do I have these errors all of sudden on opening up the application and what should I do to correct the problems?
Also, there were two other things I noticed:
- I tried to access the MSDN Library for Visual Basic 6.0 (via the Help menu) but discovered that the help library has disappeared. The other MSDN libraries (Visual C++ , etc..) were still there, but the Visual Basic 6.0 one was gone. A window gets displayed telling me to reinstall the library from disc
- When I first started my project, I added some controls via the Components menu option. Two of these controls(RICHTX32.OCX and COMDLG32.OCX) I added but never used yet. I decided to use a richTextBox last night and realized that the richTextBox icon in the control window (or is it called the component window), as well as the Common Dialog icon, were changed to a plain white folder icon. Usually these icons would be seen as image icons. Anyway, I tried to drag a richTextBox in the Form and was told that it could not found (or something like that).
Edited by - uncletr on 6/19/2004 3:41:59 PM
Memory "Leak" With Accessing Oracle Ref Cursors From VB6
Hey,
I would appreciate some help on this one, if possible...
When I call am Oracle 9i stored procedure that returns a REF CURSOR from VB6 I get what seems a memory "leak". Memory is allocated by the .exe to hold the recordset but is not immediately released when the recordset is closed, as expected. Give the machine a half hour or so and the memory alloacted to the exe will slowly drop to normal. However, I require immediate memory deallocation as we're talking about big recordsets of 100s of Megs. Interestingly, if I don't use the Stored proc and query the table directly using a "conn.Execute" then memory will be allocated and then instantly deallocated as per normal.
-------------------------------------------------------------------------------
---Stored proc (returns a large recordset)---
TYPE csResultSet IS REF CURSOR;
PROCEDURE Test (outCursor OUT csResultSet)
IS
BEGIN
OPEN outCursor FOR ('SELECT * FROM X');
END Test;
--- VB calling code ---
Private Sub Command1_Click()
Dim conn As ADODB.Connection
Set conn = New ADODB.Connection
With conn
.Mode = adModeShareDenyNone
.CursorLocation = adUseClient
.ConnectionString = "Provider=MSDAORA.1;User ID=/; Password=; Data Source = xxx"
.Open
End With
Set rs = conn.Execute("Test")
rs.Close
Set rs = Nothing
conn.Close
Set conn = Nothing
End Sub
-------------------------------------------------------------------------------
I hope someone can give us a clue to what is going on because I'm going around the twist even more than I normally am,
cheers,
James
Combobox Help """""""""""""'Urgent"""""""&&quo
Hi Guys,,,,,,
This may be the stupid way.But i need this.................
I am using combobox in my form. I set the style to Dropdown combo.
Here we can exter text in combobox b'coz of the style Dropdown combo.
But i don't want to allow user to enter ......allowed only to select.....
For that i can set the style to Dropdownlist.
But i don't want this style. B'coz i can't clear the text at run time.
Tell me if dropdown combo means, User shouldn't enter at runtime
Tell me if dropdown list means, how to clear the text at runtime...
Pls help me out.....Urgent
sangeetha
Corrupt Variables And "memory Error"
Hi People
I would REALLY like comments on the following, even if no one can give me a solution!
Further to my other post about Word corrupting variables, I have modified the code, but not changed anything to do with variables i.e. I still use:
ActiveDocument.Variables.Add name:="xxx", Value:=yyy
(where yyy is a value generated by the code)
The new code gives slightly different results i.e. Word crashes with the following message:
Winword.EXE Application Error
The instruction at “0x308e05a0” referenced memory at “0x0182a27a”. The memory could not be “written”. Click OK to terminate etc.
Note this is NOT my code, it is Word. I understand this message appears when Word tries to access a memory area where it is not allowed i.e. Word wants to save my variables where it shouldn’t. My previous post’s error description ties up with this, as it is obvious that Word is not sorting the variables out properly.
Sorry, I should have said this only occurs at work on 4 computers, using XP, NT4, Win2000. Three computers at home (XP, Me) are all fine.
Some more interesting things:
I transferred the dot file with the code to a work’s machine, double clicked on it, Word opened. Even if I don’t run the code (or even touch any key!) when I close Word I get the above error message. I close Word, but the computer is stuffed and I have to restart (so much for Win 2000 stable memory management!).
With great difficulty (this long post would be much worse if I went into all that!) I have added my code to two of the work’s computers. I did this by commenting out the “variable add name lines”, opening the dot file, going in to VBA and copying over the code/form to the normal.dot template. Save VBA, close Word. Open Word, remove comments from variable line, save VBA. Code works fine (yes, it all works perfectly). Opening documents I have made on other machines reveals the correctly stored variables!
Thus, the mere presence of the “add variable lines” will cause a crash (i.e. without compiling or running), unless they are “made” in the machine that then runs the code.
The only differences between work and home is home has Office 2000 SP3 and I think work SP1. Work is also networked.
Someone commented that similar problems occurred with Office 97, but surely 2000 (all versions) has it sorted??
I don’t fancy personally visiting all the computers I was hoping this would be used on to carefully integrate the code!!!
Skeletal
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