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suborb edited this page May 11, 2017 · 3 revisions

GUI (gui.h)

| Header | {z88dk}/include/gui.h |
| -------------------------------------------------------------------------------------------------------------
| Source | {z88dk}/libsrc/graphics/x11 (part of) | | Include | #include <gui.h> |
| Linking | -lx11 |
| Compile | n/a |
| Comments | |

Very basic but portable windowing functions, based on the monochrome graphics library.

It is now part of the X11 emulation library.

Windowing API

gui_win structure

struct gui_win {
        char    *back;
        char    x;
        char    y;
        char    width;
        char    height;
        char    flags;
};

The gui_win structure includes a pointer to a sprite-like formatted memory area, the x and y coordinates and its size. The flags describe the graphical appearance and can combine the following features:

WIN_BORDER
WIN_LITE_BORDER
WIN_SHADOW

There is a further possibility: defining the "ALTGUI" flag at compile time the "round corners" mode is activated.

win_open(struct gui_win win)

Allocates a memory space for storing the background area (see malloc) and paints a clean box.

Example:

// #include "malloc.h"  <--  This should be defined, in a real case
#include "gui.h"

main()
{
    struct gui_win win;

    win->x = 30; win->y = 15;
    win->flags = WIN_BORDER|WIN_SHADOW;
    win->height = 20; win->width = 40;
    win_open (win);
}

win_close(struct gui_win win)

Recovers the background area and frees the relative memory area.

Example:


    win_close (win);

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