안녕하세요~ 이제 막 오픈GL를 배우는 초보입니다.

C++빌더에서 OpenGl을 사용할경우 컴파일한 프로그램을 종료하면 디버그창 뜹니다.
그래도 어디가 문제인가 찾아봤더니..

    wglMakeCurrent( NULL, NULL );
    if( TRUE == wglDeleteContext( hRC ) )  // <--- 이 부분에서 문제
    {
      MessageBox(hWnd,"a","a",MB_OK);
    }
    ReleaseDC( hWnd, hDC );

저기 주석으로 표시된 줄이 문제더군요.. Dev-C++로 동일한 소스를 컴파일 해봤는데.
저 부분에서 TRUE 잘 리턴 하더군요..
근데 C++빌더에선 FALSE리턴하네여.. 저부분 때문에 자꾸 빌더에서 디버그창이 뜨는데
고칠 방법이 없나여??

참고로 전체 소스 올려드릴께여..

/*
   Name: GLSAMPLE
   Author: Blaine Hodge
   Description: OpenGL sample. Read the file Include\Gl\ReadMe.txt
                for informations on using OpenGL.
   Date: -
   Copyright: Public domain
*/

// Includes

#include <windows.h>
#include <gl/gl.h>

// Function Declarations

LRESULT CALLBACK WndProc( HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam );

VOID EnableOpenGL( HWND hWnd, HDC * hDC, HGLRC * hRC );
VOID DisableOpenGL( HWND hWnd, HDC hDC, HGLRC hRC );

// WinMain

int WINAPI WinMain( HINSTANCE hInstance, HINSTANCE hPrevInstance,
                                                LPSTR lpCmdLine, int iCmdShow )
{
    WNDCLASS wc;
    HWND hWnd;
    HDC hDC;
    HGLRC hRC;       
    MSG msg;
    BOOL bQuit = FALSE;
    float theta = 0.0f;

// register window class
    wc.style = CS_OWNDC;
    wc.lpfnWndProc = WndProc;
    wc.cbClsExtra = 0;
    wc.cbWndExtra = 0;
    wc.hInstance = hInstance;
    wc.hIcon = LoadIcon( NULL, IDI_APPLICATION );
    wc.hCursor = LoadCursor( NULL, IDC_ARROW );
    wc.hbrBackground = (HBRUSH)GetStockObject( BLACK_BRUSH );
    wc.lpszMenuName = NULL;
    wc.lpszClassName = "GLSample";
   
    RegisterClass( &wc );

// create main window
    hWnd = CreateWindow(
            "GLSample",
            "OpenGL Sample",
            WS_CAPTION | WS_POPUPWINDOW | WS_VISIBLE,
            0,
            0,
            256,
            256,
            NULL,
            NULL,
            hInstance,
            NULL);

// enable OpenGL for the window
    EnableOpenGL( hWnd, &hDC, &hRC );

// program main loop
    while ( !bQuit )
    {
        if ( PeekMessage( &msg, NULL, 0, 0, PM_REMOVE ) )
        {
            if ( msg.message == WM_QUIT )
            {
                bQuit = TRUE;
            }
            else
            {
                TranslateMessage( &msg );
                DispatchMessage( &msg );
             }

         }
         else
         {

// OpenGL animation code goes here
        glClearColor( 0.0f, 0.0f, 0.0f, 0.0f );
        glClear( GL_COLOR_BUFFER_BIT );

        glPushMatrix();
        glRotatef( theta, 0.0f, 0.0f, 1.0f );
       
        glBegin( GL_TRIANGLES );
           glColor3f( 1.0f, 0.0f, 0.0f ); glVertex2f( 0.0f, 1.0f );
           glColor3f( 0.0f, 1.0f, 0.0f ); glVertex2f( 0.87f, -0.5f );
           glColor3f( 0.0f, 0.0f, 1.0f ); glVertex2f( -0.87f, -0.5f );
        glEnd();
       
        glPopMatrix();
        SwapBuffers( hDC );

        theta += 1.0f;

        }

        }

    // shutdown OpenGL
    DisableOpenGL( hWnd, hDC, hRC );
    // destroy the window explicitly
    DestroyWindow( hWnd );

    return msg.wParam;
}

// Window Procedure

LRESULT CALLBACK WndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
{

    switch ( message )
    {

        case WM_CREATE:
                return 0;

        case WM_CLOSE:
                PostQuitMessage( 0 );
                return 0;

        case WM_DESTROY:
                return 0;

        case WM_KEYDOWN:
                switch ( wParam )
                {
                case VK_ESCAPE:
                      PostQuitMessage( 0 );
                      return 0;
                 }
                 return 0;

         default:
               return DefWindowProc( hWnd, message, wParam, lParam );
}

}

// Enable OpenGL
VOID EnableOpenGL( HWND hWnd, HDC * hDC, HGLRC * hRC )
{
    PIXELFORMATDESCRIPTOR pfd;
    int iFormat;

    // get the device context (DC)
    *hDC = GetDC( hWnd );

    // set the pixel format for the DC
    ZeroMemory( &pfd, sizeof( pfd ) );
    pfd.nSize = sizeof( pfd );
    pfd.nVersion = 1;
    pfd.dwFlags = PFD_DRAW_TO_WINDOW |
    PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
    pfd.iPixelType = PFD_TYPE_RGBA;
    pfd.cColorBits = 24;
    pfd.cDepthBits = 16;
    pfd.iLayerType = PFD_MAIN_PLANE;
    iFormat = ChoosePixelFormat( *hDC, &pfd );
    SetPixelFormat( *hDC, iFormat, &pfd );

    // create and enable the render context (RC)
    *hRC = wglCreateContext( *hDC );
    wglMakeCurrent( *hDC, *hRC );
}

// Disable OpenGL
VOID DisableOpenGL( HWND hWnd, HDC hDC, HGLRC hRC )
{
    wglMakeCurrent( NULL, NULL );
    if( TRUE == wglDeleteContext( hRC ) )
    {
      MessageBox(hWnd,"a","a",MB_OK);
    }
    ReleaseDC( hWnd, hDC );
}