Sponsored Content
Full Discussion: system calls in C
Top Forums UNIX for Dummies Questions & Answers system calls in C Post 302514673 by fpmurphy on Sunday 17th of April 2011 10:57:18 AM
Old 04-17-2011
What operating system are you using?
 

10 More Discussions You Might Find Interesting

1. UNIX for Dummies Questions & Answers

System Calls

What does the system call "dup" do? What is the difference between dup and dup2 I have a fair idea of what it does but I am confused when its coming down to the exact details... Please help me!:confused: (2 Replies)
Discussion started by: clickonline1
2 Replies

2. UNIX for Dummies Questions & Answers

System calls for cp and mv

Which system calls are made for operations cp and mv (2 Replies)
Discussion started by: gaurava99
2 Replies

3. UNIX for Dummies Questions & Answers

System calls?

open, creat, read, write, lseek and close Are they all primitive? :confused: *Another Question: is there a different between a system call, and an i/o system call? (2 Replies)
Discussion started by: PlunderBunny
2 Replies

4. Solaris

System calls ?

where can i find the differences in System calls between solaris and aix? also is it possible to find a comprehensive list of them? (1 Reply)
Discussion started by: TECHRAMESH
1 Replies

5. UNIX Desktop Questions & Answers

Using system calls

Hi, I'm new to UNIX system calls. Can someone share your knowledge as to how exactly system calls should be executed? Can they be typed like commands such as mkdir on the terminal itself? Also, are there any websites which will show me an example of the output to expect when a system call like... (1 Reply)
Discussion started by: ilavenil
1 Replies

6. Programming

System calls

why user is not able to switch from user to kernel mode by writing the function whose code is identical to system call. (1 Reply)
Discussion started by: joshighanshyam
1 Replies

7. BSD

system calls

what is the functions and relationship between fork,exec,wait system calls as i am a beginer just want the fundamentals. (1 Reply)
Discussion started by: sangramdas
1 Replies

8. UNIX for Dummies Questions & Answers

About system calls.

Hi all, I am new here . I want to know about system call in detail. As system calls are also function .How system identifies it.:) (2 Replies)
Discussion started by: vishwasrao
2 Replies

9. UNIX for Dummies Questions & Answers

System calls in UNIX

Hi i am very new to programming in UNIX and don't understand the difference between a system call and a normal function call. Also can I implement system calls from within a program? If so could someone please give me an example of a system call from within a program. Lastly, when creating a... (1 Reply)
Discussion started by: bjhum33
1 Replies

10. Programming

Are system calls in c language only????

Hi friends, I have three questions. 1) What are system calls? 2) Is it necessary that system calls be in c language (in unix operating system)? 3) Importance of c language when programming in unix environment??? Looking forward to your wonderful replies! ... (2 Replies)
Discussion started by: gabam
2 Replies
select_mouse_cursor(3alleg4)					  Allegro manual				      select_mouse_cursor(3alleg4)

NAME
select_mouse_cursor - Tells Allegro to select software or hardware cursor drawing. SYNOPSIS
#include <allegro.h> void select_mouse_cursor(int cursor); DESCRIPTION
This function allows you to use the operating system's native mouse cursors rather than some custom cursor. You will need to enable this functionality by calling enable_hardware_cursor() beforehand. If the operating system does not support this functionality, or if it has not been enabled, then Allegro will substitute its own cursor images. You can change these substitute images using set_mouse_cursor_bitmap(). Note that the effects of this function are not apparent until show_mouse() is called. To know whether the operating system's native cursor is being used, or if Allegro has made a substitution, you can check the GFX_SYS- TEM_CURSOR flag in gfx_capabilities after calling show_mouse(). The cursor argument selects the type of cursor to be displayed: MOUSE_CURSOR_NONE Selects an invisible mouse cursor. In that sense, it is similar to calling show_mouse(NULL); MOUSE_CURSOR_ALLEGRO Selects the custom Allegro cursor, i.e. the one that you set with set_mouse_sprite(). MOUSE_CURSOR_ARROW The operating system default arrow cursor. MOUSE_CURSOR_BUSY The operating system default `busy' cursor (hourglass). MOUSE_CURSOR_QUESTION The operating system default `question' cursor (arrow with question mark). MOUSE_CURSOR_EDIT The operating system default `edit' cursor (vertical bar). Example: /* initialize mouse sub-system */ install_mouse(); enable_hardware_cursor(); /* Set busy pointer */ select_mouse_cursor(MOUSE_CURSOR_BUSY); show_mouse(screen); /* Initialize stuff */ ... /* Set normal arrow pointer */ select_mouse_cursor(MOUSE_CURSOR_ARROW); SEE ALSO
install_mouse(3alleg4), show_mouse(3alleg4), set_mouse_sprite(3alleg4), gfx_capabilities(3alleg4), enable_hardware_cursor(3alleg4), set_mouse_cursor_bitmap(3alleg4), show_os_cursor(3alleg4), exsyscur(3alleg4) Allegro version 4.4.2 select_mouse_cursor(3alleg4)
All times are GMT -4. The time now is 03:43 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy