Hello,
I need to create a pixmap of depth 1 from an XImage, for using it as
clipmask. Could anyone tell me why this piece of code give a XPutImage()
BadMatch error:

myClipImageData=(char *)malloc((20*20)+100); // keeps large
myClipImage=XCreateImage(mydisplay,myvisual,1,XYBi tmap,0,
myClipImageData,20,20,8,0);
// create clipmask
myClipPixmap=XCreatePixmap(mydisplay,window1,20,20 ,1);
XPutImage(mydisplay,myClipPixmap,mygc,myClipImage, 0,0,0,0,20,20);
XDestroyImage(myClipImage);

while instead this (where mydepth is truecolor) works:

myImageData=(char *)malloc((20*20*24)+1000); // keeps large
myImage=XCreateImage(mydisplay,myvisual,mydepth,XY Pixmap,0,
myImageData,20,20,8,0);
// create the image which the clipmask will be applied to
myPixmap=XCreatePixmap(mydisplay,window1,20,20,myd epth);
XPutImage(mydisplay,myPixmap,mygc,myImage,0,0,0,0, 20,20);
XDestroyImage(myImage);

Thanks

here follows full code extracted from my application:

>>>>>>>>>>>>>>>>>>>>>test.c>>>>>>>>>>>>>>>>>>>>>>>>>>

#include

void main(void) {
Visual *myvisual;
Display *mydisplay;
int myscreen,mydepth;
unsigned long myforeground,mybackground; GC mygc;
Drawable window1;
XImage *myImage,*myClipImage;
Pixmap myPixmap, myClipPixmap;
char *myClipImageData,*myImageData;

mydisplay=XOpenDisplay("");
myscreen=DefaultScreen(mydisplay);
mydepth=DefaultDepth(mydisplay,myscreen);
myvisual=DefaultVisual(mydisplay,myscreen);
myforeground=WhitePixel(mydisplay,myscreen);
mybackground=BlackPixel(mydisplay,myscreen);

window1=XCreateSimpleWindow(mydisplay,DefaultRootW indow(mydisplay),
0,0,100,100,10,myforeground,mybackground);
XMapRaised(mydisplay,window1);

mygc=XCreateGC(mydisplay,window1,0,0);


myImageData=(char *)malloc((20*20*24)+1000); // keeps large
myImage=XCreateImage(mydisplay,myvisual,mydepth,XY Pixmap,0,
myImageData,20,20,8,0);
// create the image which the clipmask will be applied to
myPixmap=XCreatePixmap(mydisplay,window1,20,20,myd epth);
XPutImage(mydisplay,myPixmap,mygc,myImage,0,0,0,0, 20,20);
XDestroyImage(myImage);
printf("done pixmap\n");

XSync(mydisplay,0);

myClipImageData=(char *)malloc((20*20)+100); // keeps large
// create clipmask
myClipImage=XCreateImage(mydisplay,myvisual,1,XYBi tmap,0,
myClipImageData,20,20,8,0);
myClipPixmap=XCreatePixmap(mydisplay,window1,20,20 ,1);
XPutImage(mydisplay,myClipPixmap,mygc,myClipImage, 0,0,0,0,20,20);
XDestroyImage(myClipImage);
printf("done pixmap clipmask\n");


XFreeGC(mydisplay,mygc);
XDestroyWindow(mydisplay,window1);
XCloseDisplay(mydisplay);
}