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I have found some problems in porting LINUX to WIN32 that contradict things that have been stated here. Specifically, the general idea of what is ANSI varies from person to person. The main problem I found is in these situations:
void some_function(char* string, long string_size) {
char buffer[string_size+1];
strcpy(buffer, string);
...
}
This code typically compiles with GCC, but not in WIN32 because "string_size" is not a constant. Technically, there is no real reason for this code not to compile, since it is perfectly possible to generate machine code for these kinds of instructions. However, I don't know how to get it to compile in WIN32. So, I find these compilations errors, and change them to something like:
void some_function(char* string, long string_size) {
char buffer[MAX_STRING_SIZE+1];
MyAssertSize(string_size, MAX_STRING_SIZE);
strcpy(buffer, string);
...
}
The MAX_STRING_SIZE is defined to be the maximum string size, and the MyAssertSize() is a macro (#define) that generates a controlled error if the requested size happens to be larger than the defined value.
Anyway, these are the hardest problems I have found. But, in general, you can expect code to compile but also expect tons of wornings. I have grown acustomed to living with them.
I hope this helps,
Rilhas
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hello frnds.I am passing some parmtrs frm comndline to MFC exe.If syntax err ocurs ve to display in cmndLine.How to do.I ve tried cout.its not working.
kannan
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Use
system( "pause" );
Dream bigger... Do bigger...Expect smaller
aji
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kanna_p wrote: I ve tried cout.its not working.
Why not? What symptoms are you seeing?
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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DavidCrow wrote: symptoms
I dislike feeling at home when i am abroad.
To all the virgins in the world thanks for Nothing
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nothing is happening.Mine is a GUI application.So only AfxMessageBox is working.But I need the msg to be displayed in commandline shell which invoked the application.
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You cannot mix AfxMessageBox(), which is for GUI apps, and cout, which is for console apps.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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If your MFC program is a commandline app, you should be given handles to the appropriate output streams. If it is a GUI app, use AfxMessageBox.
earl
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Dear all,
Iam using HWND CreateDialog(HINSTANCE hInstance,LPCTSTR lpTemplate, HWND hWndParent,DLGPROC lpDialogFunc); to create a dialog in DLL, how to get the parameter hInstance is correctly , it must be the dll module's instance..
Manjunath S
GESL
Bangalore
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Manjunath S wrote: how to get the parameter hInstance is correctly ,
GetModuleHandle
Nibu thomas
A Developer
Programming tips[^] My site[^]
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Why aren't you using the value passed to DllMain()?
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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Hi all,
I used the hinstance passed in the dll main,And i used it to create dialog model using createdialog . But in that dialog i have static control(having text "driver is loading please wait"),this static text is not displaying . but it display after i returned from that DLL function...
Manjunath S
GESL
Bangalore
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I start threads using AfxBeginThread like :
<br />
AfxBeginThread(myproc,(LPVOID)data);<br />
<br />
UINT myproc(LPVOID lparam)<br />
{<br />
do<br />
{<br />
<br />
}while;<br />
<br />
return(0); ---------> is this enough to close the thread. ? <br />
}<br />
I read if p_AutoDelete in a CWinThread object is set to true(which is it's default) , the thread gets deleted automatically. But I'm not assigning my AfxBegin call to a CWinThread object, But still do you think it'll get deleted automatically? valid suggestions please..
Thanks,
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hi,
I thing here in ur case the thread gets deleted while returning from the thread function
Dream bigger... Do bigger...Expect smaller
aji
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Meat Loaf wrote: e thread gets deleted automatically.
that will do
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
VC Forum Q&A :- I/ IV
Support CRY- Child Relief and You
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Yes your thread will go to death automatically. because a thread created with a AfxBeginThread() call in MFC is always a CWinThread .
Happy programming keep asking.
I am the brain behind...
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HELLO,
Now i can read and write all events in any log source (Application,System...)
i can catch each event logging in a specified log source.
the problem is that i want to cach any event in any log source.
this is the proc of catch:
BOOL notifyChange(LPCTSTR logSource)
{
BOOL bSuccess;
HANDLE hEventLog, hEvent;
DWORD dwWaitResult;
hEventLog = OpenEventLog(NULL, // local machine
logSource); // event log source name
if (hEventLog == NULL)
{
printf("Could not open event log.");
return FALSE;
}
hEvent = CreateEvent(NULL, // default security attributes
FALSE, // no manual reset
FALSE, // create as not signaled
NULL); // no event name
NotifyChangeEventLog(hEventLog, hEvent);
dwWaitResult = WaitForSingleObject(hEvent, INFINITE);
if (dwWaitResult == WAIT_FAILED)
bSuccess = FALSE;
else bSuccess = TRUE;
CloseHandle(hEvent);
CloseEventLog(hEventLog);
return bSuccess;
}
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Hello everyone,
I have verified that the following approach works to set the size of a file (newly created file) to be 100 bytes, but I am not sure whether it is the correct/best way to have a maximum portability (I need to write code on both Windows and Linux).
Could anyone give me any comments?
<br />
#include "fcntl.h"<br />
#include "sys/types.h"<br />
#include "sys/stat.h"<br />
#include "io.h"<br />
#include "stdio.h"<br />
<br />
int main()<br />
{<br />
FILE* file = fopen ("foo123", "w+");<br />
<br />
fseek (file, 99, SEEK_SET);<br />
<br />
fprintf (file, "x");<br />
<br />
fclose (file);<br />
<br />
return 0;<br />
}<br />
thanks in advance,
George
-- modified at 6:11 Monday 17th July, 2006
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It's probably a lot more portable than SetEndOfFile(). 
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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Thank you DavidCrow!
What do you mean SetEndOfFile()? Is there a method called SetEndOfFile() in C?
regards,
George
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George_George wrote: Is there a method called SetEndOfFile() in C?
There's a function called SetEndOfFile().
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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Thank you DavidCrow!
Why my method is better than SetEndOfFile()?
regards,
George
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George_George wrote: Why my method is better than SetEndOfFile()?
You wanted portability, didn't you?
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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Thank you DavidCrow!
Yes, I mean why SetEndOfFile() has worse portability?
regards,
George
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George_George wrote: ...why SetEndOfFile() has worse portability?
It's only for a Windows platform.
"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank
"Judge not by the eye but by the heart." - Native American Proverb
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