Error C2664 Cannot Convert From
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Error C2664 Cannot Convert Parameter 1 From
Documentation APIs and reference Dev centers Retired content Samples We’re sorry. The content you requested error c2664 cannot convert parameter from const char to lpcwstr has been removed. You’ll be auto redirected in 1 second. C/C++ Building Reference C/C++ Build Errors Compiler Errors C2600 Through C2699 Compiler Errors C2600 error c2664 cannot convert argument Through C2699 Compiler Error C2664 Compiler 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
Error C2664 In C++
C2624 Compiler Error C2626 Compiler Error C2627 Compiler Error C2628 Compiler Error C2630 Compiler Error C2632 Compiler Error C2633 Compiler Error C2634 Compiler Error C2635 Compiler Error C2636 Compiler Error C2637 Compiler Error C2638 Compiler Error C2640 Compiler Error C2645 Compiler Error C2646 Compiler Error C2647 Compiler Error C2648 Compiler Error C2649 Compiler Error C2650 Compiler Error C2651 Compiler Error C2652 Compiler Error C2653 Compiler Error C2654 Compiler Error C2655 Compiler Error C2656 Compiler Error C2657 Compiler Error C2658 Compiler Error C2659 Compiler Error C2660 Compiler Error C2661 Compiler Error C2662 Compiler Error C2663 Compiler Error C2664 Compiler Error C2665 Compiler Error C2666 Compiler Error C2667 Compiler Error C2668 Compiler Error C2669 Compiler Error C2670 Compiler Error C2671 Compiler Error C2673 Compiler Error C2674 Compiler Error C2675 Compiler Error C2676 Compiler Error C2677 Compiler Error C2678 Compiler Error C2679 Compiler Error C2680 Compiler Error
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Error C2664 In Visual C++
Join them; it only takes a minute: Sign up error C2664: cannot convert parameter 1 from 'int' to 'int (__cdecl *)(int)' up vote 1 down vote favorite 2 having some trouble passing a function as a parameter of another https://msdn.microsoft.com/en-us/library/s5b150wd.aspx function... ERROR: Error 1 error C2664: 'wrapper' : cannot convert parameter 1 from 'int' to 'int (__cdecl *)(int)' int inc( int n ) { return n + 1 ; } int dec( int n ) { return n - 1 ; } int wrapper( int i, int func(int) ) { return func( i ) ; } int main(){ int a = 0 ; a = wrapper( 3, inc( 3 ) ) ; return 0 ; } c++ function http://stackoverflow.com/questions/6332078/error-c2664-cannot-convert-parameter-1-from-int-to-int-cdecl-int parameters c2664 share|improve this question edited Jun 22 '11 at 18:07 user195488 asked Jun 13 '11 at 14:52 tuk 4718 add a comment| 5 Answers 5 active oldest votes up vote 5 down vote accepted You're passing the result of a function call inc(3) to wrapper, NOT a function pointer as it expects. a = wrapper(3, &inc) ; share|improve this answer answered Jun 13 '11 at 14:54 Mark B 76.4k465138 add a comment| Did you find this question interesting? Try our newsletter Sign up for our newsletter and get our top new questions delivered to your inbox (see an example). Subscribed! Success! Please click the link in the confirmation email to activate your subscription. up vote 1 down vote Your call is passing an integer, the return value from calling inc(3), i.e. 4. That is not a function pointer. Perhaps you meant: a = wrapper(3, inc); This would work, and assign a to the value of calling int with the parameter 3. share|improve this answer answered Jun 13 '11 at 14:54 unwind 254k38331460 add a comment| up vote 1 down vote The line: a = wrapper( 3, inc( 3 ) ) ; is effectively: a = wrapper(3, 4); I think you mean: a = wrapper(3, inc); This passes a pointer to the inc() function as the second argument to wrapper(). share|improve this answer answered Jun 13 '11 at 14:55 janm 12.6k12646 add
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Verbs Diet Index 2010-03-28 Error C2664 LoadLibraryW cannot convert parameter to LPCWSTR I recently used Microsoft Visual Studio 2008 to write a simple program to load a dynamic link library (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': 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