Added docs for all the tgi functions and improved Lynx documentation

(contributed by Karri Kaksonen).


git-svn-id: svn://svn.cc65.org/cc65/trunk@4301 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
uz
2009-10-02 14:29:17 +00:00
parent b75bdc65d3
commit 6c0960819e
2 changed files with 832 additions and 10 deletions

View File

@@ -504,8 +504,45 @@ It does not declare any functions.
<sect1><tt/tgi.h/<label id="tgi.h"><p>
(incomplete)
<itemize>
<item><ref id="tgi_bar" name="tgi_bar">
<item><ref id="tgi_circle" name="tgi_circle">
<item><ref id="tgi_clear" name="tgi_clear">
<item><ref id="tgi_getcolor" name="tgi_getcolor">
<item><ref id="tgi_getcolorcount" name="tgi_getcolorcount">
<item><ref id="tgi_getdefpalette" name="tgi_getdefpalette">
<item><ref id="tgi_done" name="tgi_done">
<item><ref id="tgi_geterror" name="tgi_geterror">
<item><ref id="tgi_geterrormsg" name="tgi_geterrormsg">
<item><ref id="tgi_getmaxcolor" name="tgi_getmaxcolor">
<item><ref id="tgi_getmaxx" name="tgi_getmaxx">
<item><ref id="tgi_getmaxy" name="tgi_getmaxy">
<item><ref id="tgi_getpagecount" name="tgi_getpagecount">
<item><ref id="tgi_getpalette" name="tgi_getpalette">
<item><ref id="tgi_getpixel" name="tgi_getpixel">
<item><ref id="tgi_getxres" name="tgi_getxres">
<item><ref id="tgi_getyres" name="tgi_getyres">
<item><ref id="tgi_gotoxy" name="tgi_gotoxy">
<item><ref id="tgi_init" name="tgi_init">
<item><ref id="tgi_install" name="tgi_install">
<item><ref id="tgi_ioctl" name="tgi_ioctl">
<item><ref id="tgi_line" name="tgi_line">
<item><ref id="tgi_lineto" name="tgi_lineto">
<item><ref id="tgi_load" name="tgi_load">
<item><ref id="tgi_load_driver" name="tgi_load_driver">
<item><ref id="tgi_outtext" name="tgi_outtext">
<item><ref id="tgi_outtextxy" name="tgi_outtextxy">
<item><ref id="tgi_setcolor" name="tgi_setcolor">
<item><ref id="tgi_setdrawpage" name="tgi_setdrawpage">
<item><ref id="tgi_setpalette" name="tgi_setpalette">
<item><ref id="tgi_setpixel" name="tgi_setpixel">
<item><ref id="tgi_setviewpage" name="tgi_setviewpage">
<item><ref id="tgi_textheight" name="tgi_textheight">
<item><ref id="tgi_textstyle" name="tgi_textstyle">
<item><ref id="tgi_textwidth" name="tgi_textwidth">
<item><ref id="tgi_uninstall" name="tgi_uninstall">
<item><ref id="tgi_unload" name="tgi_unload">
</itemize>
<sect1><tt/time.h/<label id="time.h"><p>
@@ -4834,6 +4871,786 @@ be used in presence of a prototype.
</quote>
<sect1>tgi_bar<label id="tgi_bar"><p>
<quote>
<descrip>
<tag/Function/The function fills a rectangle on the drawpage with the current
color.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_bar (int x1, int y1, int x2, int y2);/
<tag/Description/The function fills a rectangle on the drawpage with the current
color.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi function
<tag/Example/<verb>
tgi_setcolor(COLOR_GREEN);
tgi_bar(10, 10, 100, 60);
</verb>
</descrip>
</quote>
<sect1>tgi_circle<label id="tgi_circle"><p>
<quote>
<descrip>
<tag/Function/The function draws a circle in the current color.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_circle (int x, int y, unsigned char radius);/
<tag/Description/The function draws a circle in the current color.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/<verb>
tgi_setcolor(COLOR_BLACK);
tgi_circle(50, 40, 40);
</verb>
</descrip>
</quote>
<sect1>tgi_clear<label id="tgi_clear"><p>
<quote>
<descrip>
<tag/Function/Clear the screen
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_clear (void);/
<tag/Description/Clear the screen
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_done<label id="tgi_done"><p>
<quote>
<descrip>
<tag/Function/End graphics mode, switch back to text mode.
Will NOT uninstall or unload the driver!
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_done (void);/
<tag/Description/End graphics mode, switch back to text mode.
Will NOT uninstall or unload the driver!
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getcolor<label id="tgi_getcolor"><p>
<quote>
<descrip>
<tag/Function/Return the current drawing color.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned char __fastcall__ tgi_getcolor (void);/
<tag/Description/The actual color is an index to a palette. During tgi_init
you will get a default palette. The number of colors depend on the platform.
All platforms recognize at least COLOR_BLACK and COLOR_WHITE. But some
platforms have many more predefined colors. If you paint using COLOR_GREEN
and then you change the green of the palette to blue using tgi_setpalette then
after this painting in COLOR_GREEN will actually be blue.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/<verb>
color = tgi_getcolor();
</verb>
</descrip>
</quote>
<sect1>tgi_getcolorcount<label id="tgi_getcolorcount"><p>
<quote>
<descrip>
<tag/Function/Get the number of available colors.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned char __fastcall__ tgi_getcolorcount (void);/
<tag/Description/Tgi platforms use indexed color palettes. This function
returns the number of entries we can use in the palette.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/<verb>
if (tgi_getcolorcount() == 2) {
printf("Only monochrome graphics is supported\n");
}
</verb>
</descrip>
</quote>
<sect1>tgi_getdefpalette<label id="tgi_getdefpalette"><p>
<quote>
<descrip>
<tag/Function/Get the palette installed by default.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/const unsigned char* __fastcall__ tgi_getdefpalette (void);/
<tag/Description/The tgi driver has a default palette that is active at startup.
The named colors COLOR_BLACK, COLOR_WHITE, COLOR_RED... need this palette to
work correctly.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_geterror<label id="tgi_geterror"><p>
<quote>
<descrip>
<tag/Function/Return the error code for the last operation.
This will also clear the error.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned char __fastcall__ tgi_geterror (void);/
<tag/Description/Return the error code for the last operation.
This will also clear the error.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_geterrormsg<label id="tgi_geterrormsg"><p>
<quote>
<descrip>
<tag/Function/Get an error message describing the error.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/const char* __fastcall__ tgi_geterrormsg (unsigned char code);/
<tag/Description/Get an error message describing the error.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getmaxcolor<label id="tgi_getmaxcolor"><p>
<quote>
<descrip>
<tag/Function/Get the highest index of the palette.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned char __fastcall__ tgi_getmaxcolor (void);/
<tag/Description/Get the highest index of the palette.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getmaxx<label id="tgi_getmaxx"><p>
<quote>
<descrip>
<tag/Function/Get the maximum x coordinate that can be used on this screen.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_getmaxx (void);/
<tag/Description/Get the maximum x coordinate that can be used on this screen.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getmaxy<label id="tgi_getmaxy"><p>
<quote>
<descrip>
<tag/Function/Get the maximum y coordinate that can be used on this screen.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_getmaxy (void);/
<tag/Description/Get the maximum y coordinate that can be used on this screen.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getpagecount<label id="tgi_getpagecount"><p>
<quote>
<descrip>
<tag/Function/Return the number of screen pages available.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_getpagecount (void);/
<tag/Description/Return the number of screen pages available.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/
<ref id="tgi_setdrawpage" name="tgi_setdrawpage">,
<ref id="tgi_setviewpage" name="tgi_setviewpage">
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getpalette<label id="tgi_getpalette"><p>
<quote>
<descrip>
<tag/Function/Get the palette installed.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/const unsigned char* __fastcall__ tgi_getpalette (void);/
<tag/Description/Get the palette installed.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getpixel<label id="tgi_getpixel"><p>
<quote>
<descrip>
<tag/Function/Get the color of a pixel from the viewpage.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned char __fastcall__ tgi_getpixel (int x, int y);/
<tag/Description/Get the color of a pixel from the viewpage.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getxres<label id="tgi_getxres"><p>
<quote>
<descrip>
<tag/Function/Get number of horisontal pixels on the screen.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_getxres (void);/
<tag/Description/Get number of horisontal pixels on the screen.
This is same as tgi_maxx()+1.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_getyres<label id="tgi_getyres"><p>
<quote>
<descrip>
<tag/Function/Get number of vertical pixels on the screen.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_getyres (void);/
<tag/Description/Get number of vertical pixels on the screen.
This is same as tgi_maxy()+1.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_gotoxy<label id="tgi_gotoxy"><p>
<quote>
<descrip>
<tag/Function/Set graphics cursor at x, y.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_gotoxy (int x, int y);/
<tag/Description/Set graphics cursor at x, y.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_init<label id="tgi_init"><p>
<quote>
<descrip>
<tag/Function/Initialize the already loaded graphics driver.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_init (void);/
<tag/Description/The tgi_init function will set the default palette to the
hardware and clear the screen.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/<verb>
extern char lynxtgi[]; //Include the driver statically instead of loading it.
tgi_install(&amp;lynxtgi);
tgi_init(); //Set up the default palette and clear the screen.
</verb>
</descrip>
</quote>
<sect1>tgi_install<label id="tgi_install"><p>
<quote>
<descrip>
<tag/Function/Install an already loaded driver and return an error code.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned char __fastcall__ tgi_install (void* driver);/
<tag/Description/The function installs a driver that was already loaded into
memory (or linked statically to the program). It returns an error code
(<tt/TGI_ERR_OK/ in case of success).
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only be
used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/
<ref id="tgi_load_driver" name="tgi_load_driver">,
<ref id="tgi_uninstall" name="tgi_uninstall">,
<ref id="tgi_unload" name="tgi_unload">
<tag/Example/<verb>
extern char lynxtgi[]; //Include the driver statically instead of loading it.
tgi_install(&amp;lynxtgi);
tgi_init(); //Set up the default palette and clear the screen.
</verb>
</descrip>
</quote>
<sect1>tgi_ioctl<label id="tgi_ioctl"><p>
<quote>
<descrip>
<tag/Function/Platform dependent code extensions.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_ioctl (unsigned char code, unsigned val);/
<tag/Description/Some platforms have extra display hardware that is not
supported by standard tgi functions. You can extend the driver to support
this extra hardware using tgi_ioctl functions.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
<item>These functions are not easily portable to other cc65 platforms.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/<verb>
#define tgi_sprite(spr) tgi_ioctl(0, (unsigned)(spr))
#define tgi_flip() tgi_ioctl(1, 0)
#define tgi_setbgcolor(bgcol) tgi_ioctl(2, (unsigned)(bgcol))
#define tgi_setframerate(rate) tgi_ioctl(3, (unsigned)(rate))
#define tgi_busy() tgi_ioctl(4, 0)
#define tgi_updatedisplay() tgi_ioctl(4, 1)
if (!tgi_busy()) {
tgi_sprite(&amp;background);
tgi_setcolor(COLOR_BLUE);
tgi_outttextxy(20,40,"Hello World");
tgi_updatedisplay();
}
</verb>
</descrip>
</quote>
<sect1>tgi_line<label id="tgi_line"><p>
<quote>
<descrip>
<tag/Function/Draw a line in the current drawing color.
The graphics cursor will be set to x2/y2 by this call.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_line (int x1, int y1, int x2, int y2);/
<tag/Description/Draw a line in the current drawing color.
The graphics cursor will be set to x2/y2 by this call.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_lineto<label id="tgi_lineto"><p>
<quote>
<descrip>
<tag/Function/Draw a line in the current drawing color from the graphics
cursor to the new end point. The graphics cursor will be updated to x2/y2.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_lineto (int x2, int y2);/
<tag/Description/Draw a line in the current drawing color from the graphics
cursor to the new end point. The graphics cursor will be updated to x2/y2.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_load<label id="tgi_load"><p>
<quote>
<descrip>
<tag/Function/Load and install the matching driver for the given mode.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_load (unsigned char mode);/
<tag/Description/Load and install the matching driver for the given mode.
Will just load the driver and check if loading was successul.
Will not switch to graphics mode.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_load_driver<label id="tgi_load_driver"><p>
<quote>
<descrip>
<tag/Function/Load and install the given driver. This function is identical
to tgi_load with the only difference that the name of the driver is specified
explicitly.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_load_driver (const char *name);/
<tag/Description/Load and install the driver by name.
Will just load the driver and check if loading was successul.
Will not switch to graphics mode.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_outtext<label id="tgi_outtext"><p>
<quote>
<descrip>
<tag/Function/Output text at the current graphics cursor position.
The graphics cursor is moved to the end of the text.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_outtext (const char* s);/
<tag/Description/Output text at the current graphics cursor position.
The graphics cursor is moved to the end of the text.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_outtextxy<label id="tgi_outtextxy"><p>
<quote>
<descrip>
<tag/Function/Output text at the given cursor position.
The graphics cursor is moved to the end of the text.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_outtextxy (int x, int y, const char* s);/
<tag/Description/Output text at the given cursor position.
The graphics cursor is moved to the end of the text.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_setcolor<label id="tgi_setcolor"><p>
<quote>
<descrip>
<tag/Function/Set color to be used in future draw operations.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_setcolor (unsigned char color);/
<tag/Description/Set color to be used in future draw operations.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/<verb>
tgi_setcolor(COLOR_BLACK);
tgi_bar(0,0,30,30);
tgi_setcolor(COLOR_WHITE);
tgi_bar(10,10,20,20);
</verb>
</descrip>
</quote>
<sect1>tgi_setdrawpage<label id="tgi_setdrawpage"><p>
<quote>
<descrip>
<tag/Function/Set the page for drawing.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_setdrawpage (unsigned char page);/
<tag/Description/If the drawpage and the viewpage are the same then all drawing
is seen immediately as it is drawn. For double buffered games you can set the
drawpage to a different page than the viewpage. This lets you draw the next
screen in the background and when the screen is ready you display it.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/<verb>
tgi_setdrawpage(1);
tgi_outtextxy(10, 10, "Hello World");
tgi_setviewpage(1); // Show page 1
tgi_setdrawpage(0);
tgi_outtextxy(10, 10, "Creating next frame");
...
tgi_setviewpage(0); // Show page 0
</verb>
</descrip>
</quote>
<sect1>tgi_setpalette<label id="tgi_setpalette"><p>
<quote>
<descrip>
<tag/Function/Set the palette (not available with all drivers/hardware).
Palette is a pointer to as many entries as there are colors.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_setpalette (const unsigned char* palette);/
<tag/Description/Set the palette (not available with all drivers/hardware).
Palette is a pointer to as many entries as there are colors.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_setpixel<label id="tgi_setpixel"><p>
<quote>
<descrip>
<tag/Function/Plot a pixel on the drawpage with the current color.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_setpixel (int x, int y);/
<tag/Description/Plot a pixel on the drawpage with the current color.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_setviewpage<label id="tgi_setviewpage"><p>
<quote>
<descrip>
<tag/Function/Set page to be visible on screen.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_setviewpage (unsigned char page);/
<tag/Description/If the drawpage and the viewpage are the same then all drawing
is seen immediately as it is drawn. For double buffered games you can set the
drawpage to a different page than the viewpage. This lets you draw the next
screen in the background and when the screen is ready you display it.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/<verb>
tgi_setdrawpage(1);
tgi_outtextxy(10, 10, "Hello World");
tgi_setviewpage(1); // Show page 1
tgi_setdrawpage(0);
tgi_outtextxy(10, 10, "Creating next frame");
...
tgi_setviewpage(0); // Show page 0
</verb>
</descrip>
</quote>
<sect1>tgi_textheight<label id="tgi_textheight"><p>
<quote>
<descrip>
<tag/Function/Calculate the height of the text in pixels according to
the current text style.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_textheight (const char* s);/
<tag/Description/Calculate the height of the text in pixels according to
the current text style.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_textstyle<label id="tgi_textstyle"><p>
<quote>
<descrip>
<tag/Function/Set the style for text output.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_textstyle (unsigned char magx, unsigned char magy, unsigned char dir);/
<tag/Description/Set the style for text output.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_textwidth<label id="tgi_textwidth"><p>
<quote>
<descrip>
<tag/Function/Calculate the width of the text in pixels according to the current text style.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/unsigned __fastcall__ tgi_textwidth (const char* s);/
<tag/Function/Calculate the width of the text in pixels according to the current text style.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Description/Calculate the width of the text in pixels according to the current text style.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_uninstall<label id="tgi_uninstall"><p>
<quote>
<descrip>
<tag/Function/Uninstall the currently loaded driver but do not unload it.
Will call tgi_done if necessary.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_uninstall (void);/
<tag/Description/Uninstall the currently loaded driver but do not unload it.
Will call tgi_done if necessary.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>tgi_unload<label id="tgi_unload"><p>
<quote>
<descrip>
<tag/Function/Uninstall, then unload the currently loaded driver.
Will call tgi_done if necessary.
<tag/Header/<tt/<ref id="tgi.h" name="tgi.h">/
<tag/Declaration/<tt/void __fastcall__ tgi_unload (void);/
<tag/Description/Uninstall, then unload the currently loaded driver.
Will call tgi_done if necessary.
<tag/Limits/<itemize>
<item>The function is only available as fastcall function, so it may only
be used in presence of a prototype.
</itemize>
<tag/Availability/cc65
<tag/See also/Other tgi functions.
<tag/Example/None.
</descrip>
</quote>
<sect1>time<label id="time"><p>
<quote>