#include <windows.h>
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MessageBox(NULL, "\tHello World!", "My first windows app", NULL);
return 0;
}
Trouble with windows programming C++
Author
Hello, im trying to figure out where im going wrong im following this tutorial online about windows programming. im using visual C++ 2008 express edition and here is the code that i have been asked to type.
Having just gone through a windows programming class myself I believe I know the problem you are getting. If you surround the strings with _T it should compile and run. I forget the specific reason for this, it has something to do with a unicode/ascii compatibility or something of that nature. See below for what I was talking about:
MessageBox(NULL, _T("\tHello World!"), _T("My first windows app"), NULL);
I believe this should fix your problem. If it doesn't let me know.
MessageBox(NULL, _T("\tHello World!"), _T("My first windows app"), NULL);
I believe this should fix your problem. If it doesn't let me know.
fortunately for you its just a simple sintax error where you pass text info to the messagebox method you wrote:
MessageBox(NULL, "\tHello World!", "My first windows app", NULL);
your passing text as char where it should be pass as LPCWSTR, so simple add a L before the coutes, it should look something like this
MessageBox(NULL, L"\tHello World!", L"My first windows app", NULL);
hope this helps you, please let me know if this works
MessageBox(NULL, "\tHello World!", "My first windows app", NULL);
your passing text as char where it should be pass as LPCWSTR, so simple add a L before the coutes, it should look something like this
MessageBox(NULL, L"\tHello World!", L"My first windows app", NULL);
hope this helps you, please let me know if this works
Under Project Properties, the "Character Set" option default is "UNICODE", you can change that to either "Not Set" or "MultiByte", then you can use your strings as normal.
I'm not saying one way is better than the other. I'm just saying it's possible
I'm not saying one way is better than the other. I'm just saying it's possible
Quote:Original post by stringa
Under Project Properties, the "Character Set" option default is "UNICODE", you can change that to either "Not Set" or "MultiByte", then you can use your strings as normal.
I'm not saying one way is better than the other. I'm just saying it's possible
thanks for this, i didnt know this can be done
Author
Thanks for trying but neither of those worked they both returned the error "identifer not found".
any other suggestions? *hopeful*
any other suggestions? *hopeful*
try changing this
int APIENTRY WinMain(HINSTANCE hInstance,
to this
int WINAPI WinMain(HINSTANCE hInstance,
That should fix the problem.
int APIENTRY WinMain(HINSTANCE hInstance,
to this
int WINAPI WinMain(HINSTANCE hInstance,
That should fix the problem.
i dont know whats wrong, it is like the f of a float(0.0f), it worked in my pc( Windows XP, Visual Studio 2008 Professional,C++), here is my complete code with character set set to Unicode:
#include <windows.h>
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MessageBox(NULL, L"\tHello World!", L"My first windows app", NULL);
return 0;
}
and my output:
------ Build started: Project: Help, Configuration: Debug Win32 ------
Compiling...
main.cpp
Linking...
Embedding manifest...
Build log was saved at "file://c:\Documents and Settings\Administrator\My Documents\Visual Studio 2008\Projects\GameDev Help\Help\Help\Debug\BuildLog.htm"
Help - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
#include <windows.h>
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
MessageBox(NULL, L"\tHello World!", L"My first windows app", NULL);
return 0;
}
and my output:
------ Build started: Project: Help, Configuration: Debug Win32 ------
Compiling...
main.cpp
Linking...
Embedding manifest...
Build log was saved at "file://c:\Documents and Settings\Administrator\My Documents\Visual Studio 2008\Projects\GameDev Help\Help\Help\Debug\BuildLog.htm"
Help - 0 error(s), 0 warning(s)
========== Build: 1 succeeded, 0 failed, 0 up-to-date, 0 skipped ==========
Author
Still no luck, ill post the origional code and the error message i got at first
Code:
Error messgage:
error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [14]' to 'LPCWSTR' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
Code:
#include <windows.h>int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow){ MessageBox(NULL, "\tHello World!", "My first windows app", NULL); return 0;}Error messgage:
error C2664: 'MessageBoxW' : cannot convert parameter 2 from 'const char [14]' to 'LPCWSTR' Types pointed to are unrelated; conversion requires reinterpret_cast, C-style cast or function-style cast
sorry about this question but are you sure are adding mayus L no l??? if yes when you add it what error you get??? ill try to help you
This topic is closed to new replies.
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