About QGLWidget::renderText

[showhand]

Sure,following are complete code, plese help me !

draw.h
#include<QtOpenGL>
#include<QString>
class Draw:public QGLWidget 
{
  public:
     Draw(QWidget* parent=0);
     Draw(void);
     void drawText(QString,int,int);
protected:
     void initializeGL();
     void paintGL();
     void resizeGL(int width,int height);
}
draw.cpp
#include "draw.h"
void NgiDrawWiggle::initializeGL()//called firstly
{
    z=(this->h/2)/(tan((45.0/2.0)*(3.1415926/180.0)))+0.5;     
    glShadeModel( GL_SMOOTH );
    glClearColor( 1.0, 1.0, 1.0, 0.0 ); 
    glClearDepth( 1.0 );
    glDisable( GL_DEPTH_TEST );
     // glDepthFunc( GL_LEQUAL );
    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
}
void NgiDrawWiggle::paintGL()
{	
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3ub(0,10,250);
    drawText("Time",-65,(50-7*h)/20.0);
}
void NgiDrawWiggle::resizeGL(int width,int height)
{
if ( height == 0 )
	{
		height = 1;
	}
	glViewport( 0, 0, (GLint)width, (GLint)height );	    
	glMatrixMode( GL_PROJECTION );
	glLoadIdentity();
	gluPerspective( 45.0, (GLfloat)width/(GLfloat)height, 0.1, 1000 );//
	glMatrixMode( GL_MODELVIEW );
}
void Draw::drawText(QString str,int x,int y)
{
     glLoadIdentity();
     glTranslatef(30.0,30.0,-z);//"z" is the depth of the scene through the "z=(this->h/2)/(tan((45.0/2.0)*(3.1415926/180.0)))+0.5","h" is the height of the scene.
     glRotatef(90,0,0,1); 
     renderText(x,y,0,str);
}

draw.h
#include<QtOpenGL>
#include<QString>
class Draw:public QGLWidget 
{
  public:
     Draw(QWidget* parent=0);
     Draw(void);
     void drawText(QString,int,int);
protected:
     void initializeGL();
     void paintGL();
     void resizeGL(int width,int height);
}
draw.cpp
#include "draw.h"
void NgiDrawWiggle::initializeGL()//called firstly
{
    z=(this->h/2)/(tan((45.0/2.0)*(3.1415926/180.0)))+0.5;     
    glShadeModel( GL_SMOOTH );
    glClearColor( 1.0, 1.0, 1.0, 0.0 ); 
    glClearDepth( 1.0 );
    glDisable( GL_DEPTH_TEST );
     // glDepthFunc( GL_LEQUAL );
    glHint( GL_PERSPECTIVE_CORRECTION_HINT, GL_NICEST );
}
void NgiDrawWiggle::paintGL()
{	
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
    glColor3ub(0,10,250);
    drawText("Time",-65,(50-7*h)/20.0);
}
void NgiDrawWiggle::resizeGL(int width,int height)
{
if ( height == 0 )
	{
		height = 1;
	}
	glViewport( 0, 0, (GLint)width, (GLint)height );	    
	glMatrixMode( GL_PROJECTION );
	glLoadIdentity();
	gluPerspective( 45.0, (GLfloat)width/(GLfloat)height, 0.1, 1000 );//
	glMatrixMode( GL_MODELVIEW );
}
void Draw::drawText(QString str,int x,int y)
{
     glLoadIdentity();
     glTranslatef(30.0,30.0,-z);//"z" is the depth of the scene through the "z=(this->h/2)/(tan((45.0/2.0)*(3.1415926/180.0)))+0.5","h" is the height of the scene.
     glRotatef(90,0,0,1); 
     renderText(x,y,0,str);
}

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I really don't know what I should do in the drawText(),thanks for your helping. Would you please give the complete debugged code?By the way, can I use "show list" in which renderText() is included?