SDL String Input Problem

[darkhorse]

After my second term of C++ programming I thought I had finally escaped the clutches of SDL, turns out it reared its ugly head again. I have used SDL before but never had to receive String Inputs from the user. Unfortunately, that is the primary function of this GUI that I am building for another project that I finished up (amazing how much more quick it is to build a nice clean program that runs in a little DOS box than it is to build even a very simple GUI). All of this programs functionality has not been coded out yet, but basically for some reason the unicode based solution for string input I got from the fine tutorials at lazyfoo,net (see tutorial #23, Handling String Input) works when in its own project, but does not work when included with the larger GUI, here is the code for my GUI,

#include "SDL/SDL.h"
#include "SDL/SDL_image.h"
#include "SDL/SDL_ttf.h"
#include <string>
#include "class.h"
#include "equipment.h"
#include <fstream>
#include <iostream>
#include <cstdlib>
#include <cstring>

const int SCREEN_WIDTH = 682;
const int SCREEN_HEIGHT = 536;
const int SCREEN_BPP = 32;

bool quit        = false;
bool nameEntered = false;
bool rfidEntered = false;

int x = 0;
int y = 0;

ofstream outputFile;

// The Various Messages
SDL_Surface *message    = NULL;
SDL_Surface *message1   = NULL;
SDL_Surface *message2   = NULL;
SDL_Surface *message3   = NULL;

// The Menus
SDL_Surface *main_menu  = NULL;
SDL_Surface *accnt_menu = NULL;
SDL_Surface *cash_menu  = NULL;
SDL_Surface *lost_card  = NULL;

SDL_Surface *screen = NULL;

SDL_Event event;
SDL_Event event2;

TTF_Font *font = NULL;
SDL_Color color;

SDL_Color textColor = { 255, 255, 255 };

void accnt_men();

SDL_Surface *load_image( std::string filename )
{
    SDL_Surface* loadedImage = NULL;

    SDL_Surface* optimizedImage = NULL;

    loadedImage = IMG_Load( filename.c_str() );

    if( loadedImage != NULL )
    {
        optimizedImage = SDL_DisplayFormat( loadedImage );

        SDL_FreeSurface( loadedImage );
    }

    return optimizedImage;
}

void apply_surface( int x, int y, SDL_Surface* source, SDL_Surface* destination )
{
    //Make a temporary rectangle to hold the offsets
    SDL_Rect offset;

    //Give the offsets to the rectangle
    offset.x = x;
    offset.y = y;

    //Blit the surface
    SDL_BlitSurface( source, NULL, destination, &offset );
}

class StringInput
{
    private:

    SDL_Surface *text;

    public:

    std::string str;

    StringInput();

    ~StringInput();

    std :: string get_string();

    void handle_input();

    void show_centered();

};

StringInput::StringInput()
{
    str = "well this sucks";

    text = NULL;

    SDL_EnableUNICODE( SDL_ENABLE );
}

StringInput::~StringInput()
{
    SDL_FreeSurface( text );

    //SDL_EnableUNICODE( SDL_DISABLE );
}

std :: string StringInput::get_string()
{
    return str;
};

void StringInput::handle_input()
{
	if( event.type == SDL_KEYDOWN )
	{
		std::string temp = str;

		if( str.length() <= 16 )
		{
			if( event.key.keysym.unicode == (Uint16)' ' )
			{
				str += (char)event.key.keysym.unicode;
			}

			else if( ( event.key.keysym.unicode >= (Uint16)'0' ) && ( event.key.keysym.unicode <= (Uint16)'9' ) )
			{
				str += (char)event.key.keysym.unicode;
			}

			else if( ( event.key.keysym.unicode >= (Uint16)'A' ) && ( event.key.keysym.unicode <= (Uint16)'Z' ) )
			{
				str += (char)event.key.keysym.unicode;
			}

			else if( ( event.key.keysym.unicode >= (Uint16)'a' ) && ( event.key.keysym.unicode <= (Uint16)'z' ) )
			{
				str += (char)event.key.keysym.unicode;
			}

		}

		if( ( event.key.keysym.sym == SDLK_BACKSPACE ) && ( str.length() != 0 ) )
		{
			str.erase( str.length() - 1 );
		}

		if( str != temp )
		{
			SDL_FreeSurface( text );

			text = TTF_RenderText_Solid( font, str.c_str(), color );
		}
	}
}

void StringInput::show_centered()
{
    if( text != NULL )
    {
        apply_surface( ( SCREEN_WIDTH - text->w ) / 2, ( SCREEN_HEIGHT - text->h ) / 2, text, screen );

    }

}


StringInput name;

int main( int argc, char* args[] )
{
    color.r = 255;
    color.g = 0;
    color.b = 0;

    outputFile.open("accounts.txt");

    if( SDL_Init( SDL_INIT_EVERYTHING ) == -1 )
    {
        return 1;
    }

    screen = SDL_SetVideoMode( SCREEN_WIDTH, SCREEN_HEIGHT, SCREEN_BPP, SDL_SWSURFACE );

    if( screen == NULL )
    {
        return 1;
    }

    TTF_Init();

    //Set the window caption
    SDL_WM_SetCaption( "Grimshaw Automation", NULL );

    main_menu  = load_image( "Main_Menu.bmp" );
    accnt_menu = load_image( "Account_Menu.png");

    font = TTF_OpenFont( "FreeSerif.ttf", 28 );

    message = TTF_RenderText_Solid( font, "Please Enter The New RFID Number: ", color);

    while(quit == false)
    {
        apply_surface( 0, 0, main_menu, screen );

        if( SDL_Flip( screen ) == -1 )
        {
            return 1;
        }

        while(SDL_PollEvent(&event))
        {
            if(event.type == SDL_QUIT)
            {
                quit = true;
            }

            else if( event.type == SDL_MOUSEBUTTONDOWN )
            {
                if(event.button.button == SDL_BUTTON_LEFT)
                {
                    x = event.button.x;
                    y = event.button.y;

                    // Add New Account Page

                    if(x >= 0 && x <= 361 )
                    {
                        if(y <= 221 && y >= 173)
                        {
                            accnt_men();

                        }

                        else if(y <= 258 && y >= 222)
                        {
                            // Add Cash Page
                        }

                        else if(y <= 301 && y >= 259)
                        {
                            // Lost Card Page
                        }

                        else if(y <= 373 && y >= 302)
                        {
                            // Activity Reports And Diagnostics
                        }

                        else if(y <= 441 && y >= 374)
                        {
                            // Enter Rates and Hours
                        }

                        else if(y <= 535 && y >= 442)
                        {
                            //Equipment Settings Table
                        }
                    }
                }
            }
        }
    }

    //Free the surfaces
    SDL_FreeSurface( main_menu  );
    SDL_FreeSurface( accnt_menu );
    SDL_FreeSurface( cash_menu  );
    SDL_FreeSurface( lost_card  );

    //Freeing the Messages
    SDL_FreeSurface( message );

    TTF_CloseFont( font );

    TTF_Quit();

    //Quit SDL
    SDL_Quit();

    outputFile.close();

    return 0;

}

void accnt_men()
{
    rfidEntered = false;

    apply_surface(0, 0, accnt_menu, screen);

    apply_surface(150, 250, message, screen);

    SDL_Flip(screen);

    while( rfidEntered == false )
    {
        while(SDL_PollEvent(&event))
        {
            name.handle_input();

            if( ( event.type == SDL_KEYDOWN ) && ( event.key.keysym.sym == SDLK_RETURN ) )
            {
                rfidEntered = true;
            }
        }

    }

    outputFile << name.str;
}

To recap: code works in its own project, but not when included in another, to get code in question see Tutorial #23 on lazyfoo.net, thanks for the help!

[darkhorse]

Very Hopeful Bump

[anonymous23323124]

does not work

How doesn't it work? Can you provide a particular compiler or linker error? Or a runtime error? Or what is not happening as you expect. Try to step through with a debugger to see where the code stops doing what you want it to.

[darkhorse]

Sure Thing, basically , the string that is supposed to receive the input isn't receiving any input, from what I can tell in debugging, it gets into the code block where the unicode checks are in place, but none of the the unicode if statements are getting triggered, even though they should be.

[darkhorse]

Also, i just went ahead and took out the code that disables unicode, so it can't be that im accidentally turning off unicode or something like that.