Hi
I need to implement a function similar to "OS shell".
In fact I have a web browser written under svgallib that calls external,
text-mode program.
I need to implement function vga_block and vga_unblock.
vga_block restores original state before start of the program (vga_setmode(TEXT))
and also has to restore original mouse state (so that the program can use mouse
services
without problems).
vga_unblock has to set up the graphics mode and restart the mouse.
I found it is impossible under 1.9.13. Because only way how to restore
original mouse state is mouse_close. When I call mouse_close, __svgalib_mouse_fd is
closed, and mouse_open is still left at 1.
The only way how to reengage the mouse is do in my program this gross hack:
extern int mouse_open;
There are also two limiting factors in my program:
a) I need to know the __svgalib_mouse_fd because I need to do a select() on the
descriptor when
the program is idle and doing nothing. This is only possible via calling
mouse_init_return_fd
when the mouse is already running.
b) I may not use mouse_init because I don't know the values that are normally set up in
/etc/vga/libvga.config. So I can't use mouse_init and mouse_init_return_fd to kick
up the mouse.
The only remaining possibility is vga_init.
I have written it this way:
vga_ublock(int mode)
{
...
mouse_open=0;
vga_init();
vga_setmousesupport(1);
vga_setmode(mode);
mouse_fd_for_use_ini_select=mouse_init_return_fd(...);
}
But the I realized my program doesn't work with svgalib 1.4.1 because it knows nothing
about mouse_open.
I am gonna puke from the svgalib.
Please tell me how to correctly write my vga_block and vga_unblock according to said
specifications.
Clock
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