Sure, lots out there. Koders.com is your friend for source code. Better than Google. For example here is how to convert to PNM format. Part of xgame/ximages.c.
Once your image is in PNM format, it is easy to convert to most other formats.
When I create filesystems in AIX i often get confused(using smit)
When you specify size in aix, it is asked like this
SIZE of file system (in 512-byte blocks)
I never seem to grasp this, what is the equation to get say
500mb? Or is there a program anyone knows of that does this, like a... (1 Reply)
Hello!
I'm desperately trying to write a makefile that converts and scales jpeg files to png files in subdirectories
I want to use netpbm, so I just need the commands:
anytopnm
pnmscale
pnmtopng
For various reasons i want to use a makefile. This is the first time i use the make tool... (1 Reply)
Hi guys
I'm relativley new to Perl, and have not touched html before, im trying to write a cgi script that prints all images on a single html page from a given directory. Im using perl to gather stats, rrdtool to update and create graphs now i just need to print these graphs all onto 1 index.cgi... (3 Replies)
im trying to take a 24 BPP screen cap and save it to bitmap, but seems like it XImage is always 32 BPP, the value 0x00FFFFFF supposed to be 24 !
whenever i change bmpInfoHeader.biBitCount to 24, the image gets messed up..
here is the code im using
typedef struct tagBITMAPFILEHEADER {... (5 Replies)
Hi guys. I will be frequently needing to convert .jpg files to 183x183 .png thumbnails. I can't quite seem to wrap my head around how to make a for loop to do this.
With the help of my friend (who may have mislead me, I'm quite confused) I've got this.
This is bash
the command is: pngify... (3 Replies)
Well I searched the net with varying success, but it seems kinda hard to find a one/max 2 lined command to:
strip all *.png files in the folder from their first two characters.
Any help is appreciated.
In DOS commandline of course... (17 Replies)
I use sendmail to send html emails, my script works perfect and sends email with plain text attachment.
Now i need to attache png file to the email and this attachment part is not working.
(
echo "From: $FROM"
echo "To: $TO"
echo "MIME-Version: 1.0"
echo "Subject: $SUBJECT"
echo... (4 Replies)
Need assistance in using the below script and having multiple png file attachments in the same script . Your inputs are appreciated. I dont have uuencode , I use either mailx, sendmail, mpack .
( echo "to: samplemail@somewhere.com"
echo "from: samplemail@elsewhere.com"
echo "subject:... (2 Replies)
I have Excel file with the below three columns, i need your expertise in converting this to .csv file delimiter "|"
Excel -
Serial Number Serial Name Serial Brand
111 test sample
123 test2 sample1
134 ... (9 Replies)
Discussion started by: kiran_hp
9 Replies
LEARN ABOUT ULTRIX
xcreateimage
XCreateImage(3X11) MIT X11R4 XCreateImage(3X11)Name
XCreateImage, XGetPixel, XPutPixel, XSubImage, XAddPixel, XDestroyImage - image utilities
Syntax
XImage *XCreateImage(display, visual, depth, format, offset, data, width, height, bitmap_pad, bytes_per_line)
Display *display;
Visual *visual;
unsigned int depth;
int format;
int offset;
char *data;
unsigned int width;
unsigned int height;
int bitmap_pad;
int bytes_per_line;
unsigned long XGetPixel(ximage, x, y)
XImage *ximage;
int x;
int y;
XPutPixel(ximage, x, y, pixel)
XImage *ximage;
int x;
int y;
unsigned long pixel;
XImage *XSubImage(ximage, x, y, subimage_width, subimage_height)
XImage *ximage;
int x;
int y;
unsigned int subimage_width;
unsigned int subimage_height;
XAddPixel(ximage, value)
XImage *ximage;
long value;
XDestroyImage(ximage)
XImage *ximage;
Arguments
bitmap_pad Specifies the quantum of a scanline (8, 16, or 32). In other words, the start of one scanline is separated in client memory
from the start of the next scanline by an integer multiple of this many bits.
bytes_per_line
Specifies the number of bytes in the client image between the start of one scanline and the start of the next.
data Specifies a pointer to the image data.
depth Specifies the depth of the image.
display Specifies the connection to the X server.
format Specifies the format for the image. You can pass or
height Specifies the height of the image, in pixels.
offset Specifies the number of pixels to ignore at the beginning of the scanline.
pixel Specifies the new pixel value.
subimage_height
Specifies the height of the new subimage, in pixels.
subimage_width
Specifies the width of the new subimage, in pixels.
value Specifies the constant value that is to be added.
visual Specifies a pointer to the visual.
width Specifies the width of the image, in pixels.
ximage Specifies a pointer to the image.
x
y Specify the x and y coordinates.
Description
The function allocates the memory needed for an structure for the specified display but does not allocate space for the image itself.
Rather, it initializes the structure byte-order, bit-order, and bitmap-unit values from the display and returns a pointer to the structure.
The red, green, and blue mask values are defined for Z format images only and are derived from the structure passed in. Other values also
are passed in. The offset permits the rapid displaying of the image without requiring each scanline to be shifted into position. If you
pass a zero value in bytes_per_line, Xlib assumes that the scanlines are contiguous in memory and calculates the value of bytes_per_line
itself.
Note that when the image is created using or the destroy procedure that the function calls frees both the image structure and the data
pointed to by the image structure.
The basic functions used to get a pixel, set a pixel, create a subimage, and add a constant offset to a Z format image are defined in the
image object. The functions in this section are really macro invocations of the functions in the image object and are defined in
The function returns the specified pixel from the named image. The pixel value is returned in normalized format (that is, the least-sig-
nificant byte of the long is the least-significant byte of the pixel). The image must contain the x and y coordinates.
The function overwrites the pixel in the named image with the specified pixel value. The input pixel value must be in normalized format
(that is, the least-significant byte of the long is the least-significant byte of the pixel). The image must contain the x and y coordi-
nates.
The function creates a new image that is a subsection of an existing one. It allocates the memory necessary for the new structure and
returns a pointer to the new image. The data is copied from the source image, and the image must contain the rectangle defined by x, y,
subimage_width, and subimage_height.
The function adds a constant value to every pixel in an image. It is useful when you have a base pixel value from allocating color
resources and need to manipulate the image to that form.
The function deallocates the memory associated with the structure.
See AlsoXPutImage(3X11)
X Window System: The Complete Reference, Second Edition, Robert W. Scheifler and James Gettys
XCreateImage(3X11)