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User forums => Using Code::Blocks => Topic started by: lmsmi1 on November 09, 2012, 07:42:35 pm

Title: Win32 GUI Not compiling
Post by: lmsmi1 on November 09, 2012, 07:42:35 pm
Code
#include <windows.h>

LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);


int WINAPI wWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
                    PWSTR lpCmdLine, int nCmdShow)
{
  MSG  msg;    
  WNDCLASSW wc = {0};
  wc.lpszClassName = L"Static Control";
  wc.hInstance     = hInstance;
  wc.hbrBackground = GetSysColorBrush(COLOR_3DFACE);
  wc.lpfnWndProc   = WndProc;
  wc.hCursor       = LoadCursor(0,IDC_ARROW);

  
  RegisterClassW(&wc);
  CreateWindowW(wc.lpszClassName, L"Criminal",
                WS_OVERLAPPEDWINDOW | WS_VISIBLE,
                100, 100, 330, 270, 0, 0, hInstance, 0);

  while( GetMessage(&msg, NULL, 0, 0)) {
    TranslateMessage(&msg);
    DispatchMessage(&msg);
  }

  return (int) msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg,
    WPARAM wParam, LPARAM lParam)
{
  static wchar_t *lyrics =  L"I know you told me I should stay away\n\
I know you said he's just a dog astray\n\
He is a bad boy with a tainted heart\n\
And even I know this ain't smart\n\
\n\
But mama, I'm in love with a criminal\n\
And this type of love isn't rational, it's physical\n\
Mama, please don't cry, I will be alright\n\
All reason aside, I just can't deny, love the guy\n\
";

  switch(msg)  
  {
      case WM_CREATE:
      
        CreateWindowW(L"STATIC", lyrics,
            WS_CHILD | WS_VISIBLE | SS_LEFT,
            20, 20, 300, 230,
            hwnd, (HMENU) 1, NULL, NULL);
        break;

      case WM_DESTROY:

        PostQuitMessage(0);
        break;
  }

  return DefWindowProcW(hwnd, msg, wParam, lParam);
}

It's odd how this program (copied from http://zetcode.com/gui/winapi/controls/ ) doesn't compile in C::B. It gives the error:

Undefined reference 'WinMain@16'.

I have changed the code, and it runs, but not correctly.
Title: Re: Win32 GUI Not compiling
Post by: oBFusCATed on November 09, 2012, 08:32:18 pm
Have you tried reading any of these: http://wiki.codeblocks.org/index.php?title=FAQ-Compiling_%28errors%29 ?