Please Correct me

Question

Stefano Mtangoo 455 Senior Poster

15 Years Ago

After pondering and wondering, I have decided to go for wxWidgets. Here is my first trial application. After running a test app from zetcode.com in my Code::Blocks & wxWidgets and I confirmed that it is fine! Then I tried to write my own app as shown below but I ran errors. Please correct me wher I have gone wrong, and any suggestion in the code. I'm just starting with wxWidgets
Cheers :)

#include <wx/wx.h>
class MyApp : public wxApp
{
    virtual bool OnInit();
};

class MyFrame : public wxFrame
{
    public:
        MyFrame(const wxString& title);
};

IMPLEMENT_APP(MyApp);

bool MyApp::OnInit()
{
    wxFrame *newFrame = new wxFrame(wxT("Hello Mary!"));
    newFrame->Show();
    return true;
}

MyFrame::MyFrame(const wxString& title)
       : wxFrame(NULL, wxID_ANY, title, wxDefaultPosition, wxSize(250, 150))
{
  Centre();
}

Errors:

C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|1|wx/wx.h: No such file or directory|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|3|error: expected class-name before '{' token|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|8|error: expected class-name before '{' token|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|10|error: expected `,' or `...' before '&' token|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|10|error: ISO C++ forbids declaration of `wxString' with no type|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|13|error: expected constructor, destructor, or type conversion before ';' token|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp||In member function `virtual bool MyApp::OnInit()':|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|17|error: `wxFrame' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|17|error: `newFrame' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|17|error: `wxFrame' is not a type|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|17|error: `wxT' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|17|warning: unused variable 'wxFrame'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|17|warning: unused variable 'wxT'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|22|error: expected `,' or `...' before '&' token|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: ISO C++ forbids declaration of `wxString' with no type|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp||In constructor `MyFrame::MyFrame(int)':|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: class `MyFrame' does not have any field named `wxFrame'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: `NULL' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: `wxID_ANY' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: `title' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: `wxDefaultPosition' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|error: `wxSize' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|25|error: `Centre' was not declared in this scope|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|25|warning: unused variable 'Centre'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|warning: unused variable 'NULL'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|warning: unused variable 'wxID_ANY'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|warning: unused variable 'title'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|warning: unused variable 'wxDefaultPosition'|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\myfirst\main.cpp|23|warning: unused variable 'wxSize'|
||=== Build finished: 19 errors, 8 warnings ===|

c++

3 Contributors
4 Replies
167 Views
7 Hours Discussion Span
Latest Post 15 Years Ago Latest Post by Stefano Mtangoo

Salem 5,199 Posting Sage

15 Years Ago

Compare your project settings, specifically things like additional include search paths, library search paths and libraries.

Doesn't code::blocks come with a "new wxwidgets" project tool to set all this up for you?

Reply to this topic

Be a part of the DaniWeb community

We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.

Ancient Dragon 5,243 Achieved Level 70 Team Colleague Featured Poster · Answer 1 · 2009-05-17T00:22:15+00:00

It doesn't compile with VC++ 2008 Express either. The compiler didn't like the preprocessor directive on line 1002, chkconf.h. So I changed it to this:

#ifdef wxUSE_CRASHREPORT
#if !wxUSE_ON_FATAL_EXCEPTION
#   ifdef wxABORT_ON_CONFIG_ERROR
#       error "wxUSE_CRASHREPORT requires wxUSE_ON_FATAL_EXCEPTION"
#   else
#       undef wxUSE_CRASHREPORT
#       define wxUSE_CRASHREPORT 0
#   endif
#endif /* wxUSE_CRASHREPORT */
#endif

After that, the compiler issued the error message on line 1819. error "wxClipboard requires wxDataObject"

Stefano Mtangoo 455 Senior Poster · Answer 2 · 2009-05-17T00:41:28+00:00

Ok, I realize that. I used console instead of wxWidgets. Really I jumped on broken glass and guess what? :)

Now When I compile it gives me some sort of errors

C:\Documents and Settings\smtangoo\My Documents\C++ projects\steve\steveApp.cpp||In member function `virtual bool MyApp::OnInit()':|
C:\Documents and Settings\smtangoo\My Documents\C++ projects\steve\steveApp.cpp|17|error: no matching function for call to `wxFrame::wxFrame(const wchar_t[12])'|
C:\Program Files\CodeBlocks\wxWidgets-2.8.10\include\wx\msw\frame.h|168|note: candidates are: wxFrame::wxFrame(const wxFrame&)|
C:\Program Files\CodeBlocks\wxWidgets-2.8.10\include\wx\msw\frame.h|27|note: wxFrame::wxFrame(wxWindow*, wxWindowID, const wxString&, const wxPoint&, const wxSize&, long int, const wxString&)|
C:\Program Files\CodeBlocks\wxWidgets-2.8.10\include\wx\msw\frame.h|19|note: wxFrame::wxFrame()|
||=== Build finished: 1 errors, 0 warnings ===|

Stefano Mtangoo 455 Senior Poster · Answer 3 · 2009-05-17T01:35:24+00:00

Ok I messed up line 17, it should have been

MyFrame *newFrame = new MyFrame(wxT("Hello Mary!"));