nanogui: Newbie question--passing events between programs
Subject:
Re: [nanogui] RE: Newbie question--passing events between program s
From:
"Greg Haerr" ####@####.####
Date:
31 Jan 2002 01:18:50 -0000
Message-Id: <046801c1a9f3$660909e0$3aba46a6@xmission.com>
Looks good. Do you think we need anything special to store
longwords rather than just string data? If we store longs as
&long, sizeof(long) it'll work, but the data will be client-processor-endian
dependent, that probably doesn't matter...
Regards,
Greg
: Ok, how about this:
:
: typedef unsigned char GR_PROP;
:
: /**
: * GrChangeProperty:
: *
: * @wid: the ID of the window the property is attached to
: * @property: the name of the property
: * @data: the data to be stored in the property
: * @len: the length of the data to be stored in the property
: *
: * Changes the data stored in the specified property attached to the
: * specified window. If the property does not already exist, it will be
: * created. The property name should be a zero terminated string. To
: * create a global property, attach it the root window
: * (GR_ROOT_WINDOW_ID). If data is a null pointer but len is 1, the
: * property is created with no data block attached to it. If len is 0,
: * the property is deleted.
: */
: void GrChangeProperty(GR_WINDOW_ID wid, GR_CHAR *property,
: GR_PROP *data, GR_COUNT len);
:
: /**
: * GrGetWindowProperty:
: *
: * @wid: the ID of the window the property is attached to
: * @property: the name of the property
: * @data: pointer to a pointer to hold the address of the returned data
: * @Returns: the length of the returned data block
: *
: * Searches for a property with the specified name in the list of
: * properties attached to the specified window and returns the data
: * block associated with the property. If no such property is found, the
: * length is zero and the a null pointer is stored in the data pointer.
: * If the property exists but no data block is associated with it, 1 is
: * returned for the length and the data pointer is set to NULL. The data
: * block is allocated with malloc() at call time, and it is the callers
: * responsibility to free it when no longer needed.
: */
: GR_COUNT GrGetWindowProperty(GR_WINDOW_ID wid, GR_CHAR *property,
: GR_PROP **data);
:
: These are basically much simplified versions of XChangeProperty() and
: XGetWindowProperty(). It's also possible to create an analog of
: XDeleteProperty() with just a #define:
:
: #define GrDeleteProperty(wid, property) GrChangeProperty(wid, \
: property, NULL, 0)
:
: --
: ------------ Alex Holden - http://www.linuxhacker.org ------------
: If it doesn't work, you're not hitting it with a big enough hammer
:
