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Call XdbeQueryExtension before of calling any Xdbe function

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XdbeQueryExtension() tells to the caller if the Xdbe extension is present in
the X server, so it should be called for sanity. But like is said in
XdbeQueryExtension(3):

	No other Xdbe functions may be called before this function.  If a
	client violates this rule, the effects of all subsequent Xdbe calls
	that it makes are undefined.

it is mandatory call this function.
---
 st.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
This commit is contained in:
Roberto E. Vargas Caballero 2012-09-16 10:45:36 +02:00
parent a62789788c
commit ba1e9daeef
1 changed files with 3 additions and 2 deletions
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5
st.c
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@ -1970,7 +1970,7 @@ xinit(void) {
XSetWindowAttributes attrs;
Cursor cursor;
Window parent;
int sw, sh;
int sw, sh, major, minor;
if(!(xw.dpy = XOpenDisplay(NULL)))
die("Can't open display\n");
@ -2021,9 +2021,10 @@ xinit(void) {
CWBackPixel | CWBorderPixel | CWBitGravity | CWEventMask
| CWColormap,
&attrs);
if(!XdbeQueryExtension(xw.dpy, &major, &minor))
die("Xdbe extension is not present\n");
xw.buf = XdbeAllocateBackBufferName(xw.dpy, xw.win, XdbeCopied);
/* input methods */
xw.xim = XOpenIM(xw.dpy, NULL, NULL, NULL);
xw.xic = XCreateIC(xw.xim, XNInputStyle, XIMPreeditNothing