CEGUI 0.8.4 + OpenGL 的Hello World程序

#define GLUT_DISABLE_ATEXIT_HACK 
#include <iostream>
#include <gl/GLUT.H>
#include <gl/GL.h>
#include <tchar.h>
#include <CEGUI/CEGUI.h>
#include <cegui/RendererModules/OpenGL/GLRenderer.h>

#pragma comment(lib, "glu32.lib")
#pragma comment(lib, "CEGUIBase-0_d.lib")
#pragma comment(lib, "CEGUIOpenGLRenderer-0_d.lib")
#pragma comment(lib, "CEGUIExpatParser_d.lib")

#define EDIT_CONTROL_NAME "Root/EditBox"

using namespace CEGUI;

int G_lastFrameTime = 0;
bool G_quitFlag = false;
void mouseMotion(int x, int y);
void mouseButton(int button, int state, int x, int y);
void KeyCharDown(unsigned char key, int x, int y);
void KeyCharUp(unsigned char key, int x, int y);
void RenderScene();
void InitGUI();
bool btnClick(const CEGUI::EventArgs& args);
void mouseButton(int button, int state, int x, int y);
void mouseMove(int x, int y);


void display(void)
{
    int thistime = glutGet(GLUT_ELAPSED_TIME);
    float elapsed = static_cast<float>(thistime - G_lastFrameTime);
    G_lastFrameTime = thistime;
    CEGUI::System::getSingleton().injectTimePulse(elapsed / 1000.f);
    glClear(GL_COLOR_BUFFER_BIT);
    CEGUI::System::getSingleton().renderAllGUIContexts();
    glFlush();
    glutPostRedisplay();
    glutSwapBuffers();
}

int main(int argc, char* argv[])
{
    glutInit(&argc, argv);
    glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE);
    glutInitWindowPosition(100, 100);
    glutInitWindowSize(400, 400);
    glutCreateWindow("test");
    // glutSetCursor(GLUT_CURSOR_NONE);

    InitGUI();

    glutDisplayFunc(display);
    glutMouseFunc(mouseButton);
    glutPassiveMotionFunc(mouseMove);
    //glutMotionFunc(mouseMotion);
    glutMainLoop();
    return 0;
}

bool btnClick(const CEGUI::EventArgs& args)
{
    std::cout << "clicked" << std::endl;
    //glutPostRedisplay();
    return true;
}

void InitGUI()
{
    using namespace CEGUI;
    CEGUI::OpenGLRenderer& myRenderer = CEGUI::OpenGLRenderer::bootstrapSystem(); //create();
    // CEGUI::System& sys = CEGUI::System::create(myRenderer);

    CEGUI::DefaultResourceProvider* rp = static_cast<CEGUI::DefaultResourceProvider*>(CEGUI::System::getSingleton().getResourceProvider());
    rp->setResourceGroupDirectory("schemes", "../datafiles/schemes/");
    rp->setResourceGroupDirectory("imagesets", "../datafiles/imagesets/");
    rp->setResourceGroupDirectory("fonts", "../datafiles/fonts/");
    rp->setResourceGroupDirectory("layouts", "../datafiles/layouts/");
    // 从下载的文件中考出来的文件中looknfeel叫looknfeels 注意修改
    rp->setResourceGroupDirectory("looknfeels", "../datafiles/looknfeel/");
    rp->setResourceGroupDirectory("lua_scripts", "../datafiles/lua_scripts/");
    rp->setResourceGroupDirectory("schemas", "../datafiles/xml_schemas/");

    // set the default resource groups to be used
    CEGUI::ImageManager::setImagesetDefaultResourceGroup("imagesets");
    CEGUI::Font::setDefaultResourceGroup("fonts");
    CEGUI::Scheme::setDefaultResourceGroup("schemes");
    CEGUI::WidgetLookManager::setDefaultResourceGroup("looknfeels");
    CEGUI::WindowManager::setDefaultResourceGroup("layouts");
    CEGUI::ScriptModule::setDefaultResourceGroup("lua_scripts");
    CEGUI::XMLParser* parser = CEGUI::System::getSingleton().getXMLParser();
    if (parser->isPropertyPresent("SchemaDefaultResourceGroup"))
    parser->setProperty("SchemaDefaultResourceGroup", "schemas");
    CEGUI::SchemeManager::getSingleton().createFromFile( "TaharezLook.scheme" );
    WindowManager& winMgr = WindowManager::getSingleton();
    Window* root = winMgr.loadLayoutFromFile("mytest.layout");

    CEGUI::System::getSingleton().getDefaultGUIContext().setRootWindow(root);
    CEGUI::PushButton* addBtn = (CEGUI::PushButton*)root->getChild("Add");
    addBtn->subscribeEvent(CEGUI::PushButton::EventMouseClick, CEGUI::Event::Subscriber(&btnClick));
    addBtn->setText( "Hello World!" );
}

void mouseButton(int button, int state, int x, int y)
{
    if (button == GLUT_LEFT_BUTTON) 
    {
        if (state == GLUT_UP)
        {
            CEGUI::System::getSingleton().getDefaultGUIContext().injectMouseButtonUp(CEGUI::LeftButton);
        }
        else
        {
            CEGUI::System::getSingleton().getDefaultGUIContext().injectMouseButtonDown(CEGUI::LeftButton);
        }
    }
}

void mouseMove(int x, int y)
{
    CEGUI::System::getSingleton().getDefaultGUIContext().injectMousePosition(x, y);
}

<?xml version="1.0" ?>
<GUILayout version="4">
    <Window type="DefaultWindow" name="root">
        <Window name="Add" type="TaharezLook/Button">
            <Property name="Position" value="{{0.3,0},{0.3,0}}" />
            <Property name="MaxSize" value="{{1,0},{1,0}}" />
            <Property name="Size" value="{{0.3,0},{0.15,0}}" />
            <Property name="Text" value="Add" />
         </Window>
    </Window>
</GUILayout>