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XCreateSimpleWindow and SIGSEGV
- To: gnu-win32 at cygnus dot com
- Subject: XCreateSimpleWindow and SIGSEGV
- From: "Glynn Leo" <lglynn at hotmail dot com>
- Date: Thu, 14 May 1998 03:52:17 PDT
Thanx to Earnie
I've got my program Compiling
I found that XCreateSimpleWindow is giving me
SIGSEGV fault Anyone have the same problem
Have compiled with mmalloc,downloaded the Latest Binaries on NT
and search archives but to no avail
Also have X-Server and DISPLAY set
(Do get the warning message
WinMainCRTStartup ; defaulting to 00401000 )
Anyone see any problem with the following ?
thanx
leo
#include <stdio.h>
#include <stdlib.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#include <X11/Xatom.h>
#include "Xstuff.h"
#include <string.h>
#include <X11/Xlib.h>
#include <X11/Xutil.h>
typedef struct S_window
{
Display* pDisplay;
int screen;
Window window;
GC gc;
int imageWidth;
int imageHeight;
XImage* pImage;
char* pImageData;
XImage* pSinglePixelImage;
Colormap colorMap;
} tSwindow;
tSwindow*
ScreateWindow(char* pWindowName, char* pDisplayName,
int imageWidth, int imageHeight);
#define IMAGE_WIDTH 360
#define IMAGE_HEIGHT 240
main()
{
tSwindow* pWindow;
pWindow = ScreateWindow("rgb_test",
":0.0",
IMAGE_WIDTH,
IMAGE_HEIGHT);
}
tSwindow*
ScreateWindow(char* pWindowName,
char* pDisplayName,
int imageWidth, int imageHeight
)
{
tSwindow* pReturnValue;
XGCValues gcValues;
char* pWindowBanner;
pReturnValue = (tSwindow*)malloc(sizeof(tSwindow));
/* Try to connect to the X server */
pReturnValue->pDisplay = XOpenDisplay(":0.0");
if (pReturnValue->pDisplay == NULL)
{
free(pReturnValue);
return(NULL);
}
pReturnValue->screen = DefaultScreen(pReturnValue->pDisplay);
/* Now, create the window */
/* It seems RootWindow() is causing the SIGSEGV */
pReturnValue->window =
XCreateSimpleWindow(pReturnValue->pDisplay,
RootWindow(pReturnValue->pDisplay,
pReturnValue->screen),
300,
300,
imageWidth, imageHeight,
4,
BlackPixel(pReturnValue->pDisplay,
pReturnValue->screen),
WhitePixel(pReturnValue->pDisplay,
pReturnValue->screen));
}
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