Error C2664 Visual Studio 2008
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Error C2664 Cannot Convert Parameter
Community Magazine Forums Blogs Channel 9 Documentation APIs and reference error c2664 cannot convert parameter 1 from Dev centers Retired content Samples We’re sorry. The content you requested has been removed. You’ll be error c2664 in c++ auto redirected in 1 second. C/C++ Building Reference C/C++ Build Errors Compiler Errors C2600 Through C2699 Compiler Errors C2600 Through C2699 Compiler Error C2664 Compiler
Error C2664 Lpcwstr
Error C2664 Compiler Error C2664 Compiler Error C2600 Compiler Error C2601 Compiler Error C2602 Compiler Error C2603 Compiler Error C2605 Compiler Error C2611 Compiler Error C2612 Compiler Error C2613 Compiler Error C2614 Compiler Error C2616 Compiler Error C2617 Compiler Error C2619 Compiler Error C2624 Compiler Error C2626 Compiler Error C2627 Compiler Error
Error C2664 Cannot Convert Argument
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Mfc Error C2664
Dismiss Join the Stack Overflow Community Stack Overflow is a community of 4.7 million programmers, just like you, helping each other. Join them; it error c2664 cannot convert parameter 1 from 'const char *' to 'char *' only takes a minute: Sign up C2664 error c++ Visual Studio up vote 0 down vote favorite I am trying to modify an old MFC program. After opening the project in Visual Studio 2013 there are many errors of the https://msdn.microsoft.com/en-us/library/s5b150wd.aspx type below. In AviPlay.cpp #include "stdafx.h" #include "AviPlay.h" #define OPEN_AVI_VIDEO "open avivideo" BOOL initAVI() { return mciSendString(OPEN_AVI_VIDEO, NULL, 0, NULL) == 0; } The error thrown is error C2664: 'MCIERROR mciSendStringW(LPCWSTR,LPWSTR,UINT,HWND)' : cannot convert argument 1 from 'const char [14]' to 'LPCWSTR' Should setting the compiler option for Strict to off, or some other compiler option, resolve this error? If not, I can modify the many lines of code manually. In that case, what might have changed in the last 15 http://stackoverflow.com/questions/25254938/c2664-error-c-visual-studio years that would make code like this OK before but not OK now? Thank you in advance. c++ visual-studio-2013 c2664 share|improve this question asked Aug 12 '14 at 1:44 user3931552 11 1 You could try setting the project type to multibyte rather than unicode, but I do not know if that is a valid option when using MFC. –Retired Ninja Aug 12 '14 at 1:48 The project might be set to unicode character set. This would cause your program to link to the wide version of mciSendStringW rather than the multibyte version mciSendStringA. –Beed Aug 12 '14 at 1:49 Setting to multibyte in project properties, general, character set fixed my problem. Thank you very much! –user3931552 Aug 14 '14 at 17:14 add a comment| 1 Answer 1 active oldest votes up vote 1 down vote LPCWSTR tells you it is expecting a wchar_t string, not a char string. By default, all Windows APIs now accept wchar_t strings (unicode). You can change it back to char strings in the project properties, General page, Character Set. Setting it to 'Use Multibyte char set' will get it working as it used to. share|improve this answer answered Aug 12 '14 at 1:54 ScottMcP-MVP 8,9592613 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Sign up using Facebook Sign up using Email and Password Post as a guest Na
Verbs Diet Index 2010-03-28 Error C2664 http://forums.opalkelly.com/t/pipetest-vcproj-example-visual-studio-2008-release-error/821 LoadLibraryW cannot convert parameter to LPCWSTR I recently used Microsoft Visual Studio 2008 to write a simple program to load a dynamic link library error c2664 (DLL) module and invoke some of its entry points. I did not expect to get the error message C2664 from the simple LoadLibrary statement:HINSTANCE hinstLib = LoadLibrary("azspellaid.dll"); Error C2664: 'LoadLibraryW': error c2664 cannot cannot convert parameter 1 from 'const char [15]' to 'LPCWSTR' There are two ways of fixing this problem. The first one is to cast the quoted string with a Long Pointer to Const Wide String (LPCWSTR):HINSTANCE hinstLib = LoadLibrary((LPCWSTR)L"azspellaid.dll"); The C2664 error can also be resolved by keeping the original code and changing the character set of the project defaults from "unicode character set" to "multi-byte character set" as shown in this image: © Copyright2012 - Antonio Zamora
but I got some errors. I did setup property C/C++ General => Additional include directories &Linker => General => Additional Library directories &Linker => input => Additional Dependencies. those are suitable for my wxWidgets, Visual Studio 2008, Microsoft SDKs Lib file to release the pipetest example. I got some errors like this. ================================================================= 1>------ Build started: Project: PipeTest, Configuration: Release Win32 ------1>Compiling...1>PipeTest.cpp1>.\PipeTest.cpp(342) : error C2308: concatenating mismatched strings1> Concatenating wide "An XEM was not detected or could not be initialized.1>" with narrow "Please fix the problem and restart this application."1>.\PipeTest.cpp(364) : error C2664: 'okCUsbFrontPanel::ConfigureFPGA' : cannot convert parameter 1 from 'wxCStrData' to 'const std::string'1> No user-defined-conversion operator available that can perform this conversion, or the operator cannot be called1>.\PipeTest.cpp(491) : error C2308: concatenating mismatched strings1> Concatenating wide "The FrontPanel DLL could not be loaded. Make sure1>" with narrow "this DLL is in the application start directory."1>okFrontPanelDLL.cpp1>Generating Code...1>Build log was saved at "file://c:\Program Files\Opal Kelly\FrontPanel\Samples\PipeTest\wxWidgets\Win32\ Release\BuildLog.htm"1>PipeTest - 3 error(s), 0 warning(s)========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ========== ================================================================= Please let me know how can I solve this problem!Thanks in advance! Home Categories FAQ/Guidelines Terms of Service Privacy Policy Powered by Discourse, best viewed with JavaScript enabled