Changes

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Most functions are pretty self-explanatory. Some you will not use often, while others you will be using all the time (like SetPosition). Remember, you will want to use these functions with the upper-most class you can. For example, if you set GuiImageData to a GuiImage, and then set the GuiImage to a GuiButton, you will want to set the position of the GuiButton, not the GuiImage.

Most functions are pretty self-explanatory. Some you will not use often, while others you will be using all the time (like SetPosition). Remember, you will want to use these functions with the upper-most class you can. For example, if you set GuiImageData to a GuiImage, and then set the GuiImage to a GuiButton, you will want to set the position of the GuiButton, not the GuiImage.  

The image source is your image buffer, where the contents of the image are kept. The image must be in the png format, and have dimensions that are a multiple of 4. To load an image from an sd card to an image buffer, do the following (this is a little more complicated, and is slower anyway, so only use it if necessary) '''Somebody verify this please''':

The image source is your image buffer, where the contents of the image are kept. The image must be in the png format, and have dimensions that are a multiple of 4. To load an image from an sd card to an image buffer, do the following (this is a little more complicated, and is slower anyway, so only use it if necessary) '''Somebody verify this please''':

<source lang="cpp">

<source lang="cpp">

const u8               *image_name_png;               //define the variables to hold your image file

const u8 *image_name_png; //define the variables to hold your image file

const u32               image_name_png_size;

const u32 image_name_png_size;

size_t amount_read;

size_t amount_read;

FILE *fp = fopen("Path to image on sd card","r");       //open the png file

FILE *fp = fopen("Path to image on sd card","r"); //open the png file

if(!fp) return;                                         //make sure the file exists

if(!fp) return; //make sure the file exists

fseek (fp , 0 , SEEK_END);

fseek (fp , 0 , SEEK_END);

image_name_png_size = ftell(fp);                       //find the file size

image_name_png_size = ftell(fp); //find the file size

rewind(fp);

rewind(fp);

image_name_png = new u8 [image_name_png_size];         //allocate memory for your image buffer

image_name_png = new u8 [image_name_png_size]; //allocate memory for your image buffer

if(!image_name_png) return;                             //make sure memory allocated

if(!image_name_png) return; //make sure memory allocated

amount_read = fread(image_name_png,1,image_name_png_size,fp);         //read file to buffer

amount_read = fread(image_name_png,1,image_name_png_size,fp); //read file to buffer

if(amount_read != image_size_png_size) return;                       //make sure it read everything

if(amount_read != image_size_png_size) return; //make sure it read everything

fclose(fp);                                   //close file

fclose(fp); //close file

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You may be wondering how an image gets loaded into a buffer without the sd card. Whenever you want to add a new image, you must copy the image to the source/images folder, and add it to filelist.h:

You may be wondering how an image gets loaded into a buffer without the sd card. Whenever you want to add a new image, you must copy the image to the source/images folder, and add it to filelist.h:

while(menu == MENU_NONE)   //The loop will run until menu is changed

while(menu == MENU_NONE) //The loop will run until menu is changed

{

{

VIDEO_WaitVSync ();       //Waits for the vertical sync, to reduce flickering

VIDEO_WaitVSync (); //Waits for the vertical sync, to reduce flickering

if(backBtn.GetState() == STATE_CLICKED)           //Checks if you clicked back

if(backBtn.GetState() == STATE_CLICKED) //Checks if you clicked back

{

{

menu = MENU_EXIT;   //stops the loop, and returns MENU_EXIT, which will exit the app

menu = MENU_EXIT; //stops the loop, and returns MENU_EXIT, which will exit the app

}

}

if(okayBtn.GetState() == STATE_CLICKED)           //Checks if you clicked okay

if(okayBtn.GetState() == STATE_CLICKED) //Checks if you clicked okay

                 {

                 {

menu = MENU_MAIN;                 //stops the loop, and returns MENU_MAIN, which will start the main menu

menu = MENU_MAIN; //stops the loop, and returns MENU_MAIN, which will start the main menu

}

}

}

}

HaltGui();                       //stop the gui

HaltGui(); //stop the gui

mainWindow->Remove(&w);           //remove your window to free memory

mainWindow->Remove(&w); //remove your window to free memory

return menu;                     //return the new menu to load

return menu; //return the new menu to load

}

}

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