Sample code to write a routine that catches the Windows error messages

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2.00/5 (1 vote)

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C++

int main()
{
  string filename="c:\\sample.png"//needs to validate the  filename with forbidden char

//here i m giving the filepath but it needs to escape the filepth& need to validate filename

// can any one help me how handle this situation 

}

Posted 8-May-14 9:55am

bijaynayak

Updated 8-May-14 12:16pm

Maciej Los

v2

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Maciej Los 8-May-14 18:21pm

Is it one question?

Matt T Heffron 8-May-14 18:58pm

What are you asking?
Do you want to know how to check if some string is a valid filepath and prevent the error/exception that would have occurred if it had been used?
Please use "Improve question" above to clarify.
Revising the title wouldn't hurt either...as it is, it reads as if you want to catch ALL Windows error message displays system-wide!

bijaynayak 9-May-14 3:06am

I need to validate the filename.Ex: string filename="C:\\test.png".here filename is valid & needs to create the file in the respective directory,but due to "C:\\" it is treating as invalid filename.so how to handle in my application level.

Richard MacCutchan 9-May-14 5:21am

There is nothing invalid in that string. You need to provide more details of exactly what happens when you run the program.

Matt T Heffron 9-May-14 13:11pm

To follow on Richard's comment:
string filename = "C:\\test.png";
is a perfectly valid filename because the string will ACTUALLY contain: C:\test.png"
HOWEVER:
string filename = @"C:\\test.png";
is NOT a valid filename because the string will ACTUALLY contain: C:\\test.png"
The @ prefix turns off the escaping effect of the \ in the string.

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KarstenK · Answer 1 · 2014-05-09T00:55:00

Solution 1

you can use the splitpath function to check for a valid path. And check the errno as described in the end.

Posted 9-May-14 0:55am

KarstenK