size

I need to know the image size when it loads from an extern URL because the project needs to resize the image div. I need to do something like this: <img id="imglegend'+layername+'" src="url_to_an_extern_host" /> And, using Javascript and JQuery: $('#imglegend'+layername).ready(function(){ var h = $('#imglegend'+layername); // Resize image div container }); But this didn't work. Is it possible to do? Thanks in advance! $('#imglegend').load(function(){ var w = $(this).width(); var h = $(this).height(); alert(w); alert(h); }).error(function (){ $(this).remove();//remove image if it fails to load/

what is size of empty class and difference between union, structure and class in c++ ? My idea: if no static members in them, they should be same because all members are allocated on stack. If they are all empty, they are same. if they have static members, it depends the relative location of the members inside them. right ? thanks C++ Standard standard specify's that the size of an Empty class should be Non-Zero . Usually, it is 1 byte on most systems. In Bjarne Stroustrup's words, the size is non-zero " To ensure that the addresses of two different objects will be different." The size is 1 on

My application needs to capture some pictures of a given size (lets say WxH) in a portrait orientation mode. In a general case the size WxH I want is not supported by the camera therefore I will need to crop the captured picture in order to match my specifications. This apparently simple program is driving me crazy for the problem of "good" corrispondence among preview and picture sizes and format. Let me explain: I need a format (let's give some numbers: 800x600) for the output image, and I have to take pictures in a portrait screen orientation. My camera by default is in Landscape mode

If a create a in-memory sqlite database using syntax below, then what is the size of maximum memory allocated to it? my $dbh = DBI->connect('dbi:SQLite:dbname=:memory:'); What will happen if size of in-memory database becomes greater than max available memory. Suppose I have 1 GB free and the database size become 1.1 GB, then will some data be written to disk or what? Is there a way to change the value of max-memory allocated to a in-memory sqlite database? Samy Vilar It will use virtual memory, yes it will write out to the disk once you've exceeded all your freely available memory, when that

How can I get the sector size for floppy and CD disks in Linux, via C++ code? Thank you all. clyfe "#include <hdreg.h>" and use ioctl HDIO_GET_IDENTITY to obtain a struct hd_driveid . On this structure, the x->sector_bytes field is the sector size. #include <stdlib.h> #include <stdio.h> #include <sys/ioctl.h> #include <linux/hdreg.h> #include <fcntl.h> #include <errno.h> #include <string.h> #include <cctype> #include <unistd.h> int main(){ struct hd_driveid id; char *dev = "/dev/hdb"; int fd; fd = open(dev, O_RDONLY|O_NONBLOCK); if(fd < 0) { perror("cannot open"); } if (ioctl(fd, HDIO_GET