CString results in ? when trying to assign _variant_t.bstrVal which contains russian chars
I am working on a desktop application.
I am facing this problem.
As you can see in the screenshot when this code runs it assigns Russian string to CString but its value gets corrupted.
CString csField = vField.bstrVal;
The bstrVal contains Створное O^Л.
When I assign it to CString it becomes ??s.
c++ mfc c-strings
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
add a comment |
I am working on a desktop application.
I am facing this problem.
As you can see in the screenshot when this code runs it assigns Russian string to CString but its value gets corrupted.
CString csField = vField.bstrVal;
The bstrVal contains Створное O^Л.
When I assign it to CString it becomes ??s.
c++ mfc c-strings
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
7
Educated guess: you are building an ANSI build, soCStringis a narrow string and the assignment involves Unicode to ANSI conversion. But the system codepage is not Cyrillic, so those Unicode characters are not representable in it. Ideally, switch to a Unicode build.
– Igor Tandetnik
Nov 23 '18 at 4:45
4
Go to your project settings, and add the _CSTRING_DISABLE_NARROW_WIDE_CONVERSION preprocessor symbol. Recompile. The error list will now contain a list of all potential bugs.
– IInspectable
Nov 23 '18 at 11:07
1
Looks likebstrValis a unicode andcsFielda narrow string. This will work only if the system codepage is Cyrillic, andbstrValcontains only characters that do exist in the Cyrrilic ANSI codepage. Unfortunately the system codepage can be set only globally, not per application. See a related answer in the link below: stackoverflow.com/questions/49872812/…
– Constantine Georgiou
Nov 23 '18 at 12:50
add a comment |
I am working on a desktop application.
I am facing this problem.
As you can see in the screenshot when this code runs it assigns Russian string to CString but its value gets corrupted.
CString csField = vField.bstrVal;
The bstrVal contains Створное O^Л.
When I assign it to CString it becomes ??s.
c++ mfc c-strings
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
I am working on a desktop application.
I am facing this problem.
As you can see in the screenshot when this code runs it assigns Russian string to CString but its value gets corrupted.
CString csField = vField.bstrVal;
The bstrVal contains Створное O^Л.
When I assign it to CString it becomes ??s.
c++ mfc c-strings
c++ mfc c-strings
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
asked Nov 23 '18 at 4:42
Kishan VaishnavKishan Vaishnav
919
919
7
Educated guess: you are building an ANSI build, soCStringis a narrow string and the assignment involves Unicode to ANSI conversion. But the system codepage is not Cyrillic, so those Unicode characters are not representable in it. Ideally, switch to a Unicode build.
– Igor Tandetnik
Nov 23 '18 at 4:45
4
Go to your project settings, and add the _CSTRING_DISABLE_NARROW_WIDE_CONVERSION preprocessor symbol. Recompile. The error list will now contain a list of all potential bugs.
– IInspectable
Nov 23 '18 at 11:07
1
Looks likebstrValis a unicode andcsFielda narrow string. This will work only if the system codepage is Cyrillic, andbstrValcontains only characters that do exist in the Cyrrilic ANSI codepage. Unfortunately the system codepage can be set only globally, not per application. See a related answer in the link below: stackoverflow.com/questions/49872812/…
– Constantine Georgiou
Nov 23 '18 at 12:50
add a comment |
7
Educated guess: you are building an ANSI build, soCStringis a narrow string and the assignment involves Unicode to ANSI conversion. But the system codepage is not Cyrillic, so those Unicode characters are not representable in it. Ideally, switch to a Unicode build.
– Igor Tandetnik
Nov 23 '18 at 4:45
4
Go to your project settings, and add the _CSTRING_DISABLE_NARROW_WIDE_CONVERSION preprocessor symbol. Recompile. The error list will now contain a list of all potential bugs.
– IInspectable
Nov 23 '18 at 11:07
1
Looks likebstrValis a unicode andcsFielda narrow string. This will work only if the system codepage is Cyrillic, andbstrValcontains only characters that do exist in the Cyrrilic ANSI codepage. Unfortunately the system codepage can be set only globally, not per application. See a related answer in the link below: stackoverflow.com/questions/49872812/…
– Constantine Georgiou
Nov 23 '18 at 12:50
7
7
Educated guess: you are building an ANSI build, so
CString is a narrow string and the assignment involves Unicode to ANSI conversion. But the system codepage is not Cyrillic, so those Unicode characters are not representable in it. Ideally, switch to a Unicode build.– Igor Tandetnik
Nov 23 '18 at 4:45
Educated guess: you are building an ANSI build, so
CString is a narrow string and the assignment involves Unicode to ANSI conversion. But the system codepage is not Cyrillic, so those Unicode characters are not representable in it. Ideally, switch to a Unicode build.– Igor Tandetnik
Nov 23 '18 at 4:45
4
4
Go to your project settings, and add the _CSTRING_DISABLE_NARROW_WIDE_CONVERSION preprocessor symbol. Recompile. The error list will now contain a list of all potential bugs.
– IInspectable
Nov 23 '18 at 11:07
Go to your project settings, and add the _CSTRING_DISABLE_NARROW_WIDE_CONVERSION preprocessor symbol. Recompile. The error list will now contain a list of all potential bugs.
– IInspectable
Nov 23 '18 at 11:07
1
1
Looks like
bstrVal is a unicode and csField a narrow string. This will work only if the system codepage is Cyrillic, and bstrVal contains only characters that do exist in the Cyrrilic ANSI codepage. Unfortunately the system codepage can be set only globally, not per application. See a related answer in the link below: stackoverflow.com/questions/49872812/…– Constantine Georgiou
Nov 23 '18 at 12:50
Looks like
bstrVal is a unicode and csField a narrow string. This will work only if the system codepage is Cyrillic, and bstrVal contains only characters that do exist in the Cyrrilic ANSI codepage. Unfortunately the system codepage can be set only globally, not per application. See a related answer in the link below: stackoverflow.com/questions/49872812/…– Constantine Georgiou
Nov 23 '18 at 12:50
add a comment |
1 Answer
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*Remember: When this problem occurs, first check the current culture or locale.
The answer to the problem is:
There was a line in my code which was setting current culture to
Invariant culture.
The strange thing I could not understand is when I get the current locale by setLocale(LC_ALL, NULL) it was returning the same thing irrespective of my current culture was Russian or Invariant.
To solve this problem I removed that code and now it's working fine.
//Thread::CurrentThread->CurrentCulture = gcnew CultureInfo("");
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
add a comment |
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*Remember: When this problem occurs, first check the current culture or locale.
The answer to the problem is:
There was a line in my code which was setting current culture to
Invariant culture.
The strange thing I could not understand is when I get the current locale by setLocale(LC_ALL, NULL) it was returning the same thing irrespective of my current culture was Russian or Invariant.
To solve this problem I removed that code and now it's working fine.
//Thread::CurrentThread->CurrentCulture = gcnew CultureInfo("");
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
add a comment |
*Remember: When this problem occurs, first check the current culture or locale.
The answer to the problem is:
There was a line in my code which was setting current culture to
Invariant culture.
The strange thing I could not understand is when I get the current locale by setLocale(LC_ALL, NULL) it was returning the same thing irrespective of my current culture was Russian or Invariant.
To solve this problem I removed that code and now it's working fine.
//Thread::CurrentThread->CurrentCulture = gcnew CultureInfo("");
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
add a comment |
*Remember: When this problem occurs, first check the current culture or locale.
The answer to the problem is:
There was a line in my code which was setting current culture to
Invariant culture.
The strange thing I could not understand is when I get the current locale by setLocale(LC_ALL, NULL) it was returning the same thing irrespective of my current culture was Russian or Invariant.
To solve this problem I removed that code and now it's working fine.
//Thread::CurrentThread->CurrentCulture = gcnew CultureInfo("");
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
*Remember: When this problem occurs, first check the current culture or locale.
The answer to the problem is:
There was a line in my code which was setting current culture to
Invariant culture.
The strange thing I could not understand is when I get the current locale by setLocale(LC_ALL, NULL) it was returning the same thing irrespective of my current culture was Russian or Invariant.
To solve this problem I removed that code and now it's working fine.
//Thread::CurrentThread->CurrentCulture = gcnew CultureInfo("");
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
answered Dec 3 '18 at 4:15
Kishan VaishnavKishan Vaishnav
919
919
add a comment |
add a comment |
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7
Educated guess: you are building an ANSI build, so
CStringis a narrow string and the assignment involves Unicode to ANSI conversion. But the system codepage is not Cyrillic, so those Unicode characters are not representable in it. Ideally, switch to a Unicode build.– Igor Tandetnik
Nov 23 '18 at 4:45
4
Go to your project settings, and add the _CSTRING_DISABLE_NARROW_WIDE_CONVERSION preprocessor symbol. Recompile. The error list will now contain a list of all potential bugs.
– IInspectable
Nov 23 '18 at 11:07
1
Looks like
bstrValis a unicode andcsFielda narrow string. This will work only if the system codepage is Cyrillic, andbstrValcontains only characters that do exist in the Cyrrilic ANSI codepage. Unfortunately the system codepage can be set only globally, not per application. See a related answer in the link below: stackoverflow.com/questions/49872812/…– Constantine Georgiou
Nov 23 '18 at 12:50