1 #include <stdio.h> 2 #include <MagickWand/MagickWand.h> 3 4 /* Simplify the exception handling 5 * technically we should abort the program if 6 * severity >= ErrorException 7 */ 8 void ThrowWandException(MagickWand *wand) 9 { char 10 *description; 11 12 ExceptionType 13 severity; 14 15 description=MagickGetException(wand,&severity); 16 (void) fprintf(stderr,"%s %s %lu %s\n",GetMagickModule(),description); 17 description=(char *) MagickRelinquishMemory(description); 18 } 19 20 /* useful function especially after appending two wands together */ 21 #define SwapWands(a,b) { MagickWand *tmp=a; a=b; b=tmp; } 22 23 int main(int argc, char *argv[]) 24 { 25 MagickWand 26 *wand, 27 *output; 28 29 MagickBooleanType 30 status; 31 32 printf("Check append when using 'LastIterator' on empty wand\n"); 33 printf("Result shoud be: 0123\n"); 34 35 MagickWandGenesis(); 36 37 wand = NewMagickWand(); 38 39 MagickSetLastIterator(wand); /* to empty wand */ 40 41 status = MagickReadImage(wand, "font_0.gif" ); 42 if (status == MagickFalse) 43 ThrowWandException(wand); 44 45 status = MagickReadImage(wand, "font_1.gif" ); 46 if (status == MagickFalse) 47 ThrowWandException(wand); 48 49 status = MagickReadImage(wand, "font_2.gif" ); 50 if (status == MagickFalse) 51 ThrowWandException(wand); 52 53 status = MagickReadImage(wand, "font_3.gif" ); 54 if (status == MagickFalse) 55 ThrowWandException(wand); 56 57 /* append all images together to create the output wand */ 58 MagickResetIterator(wand); /* append all images */ 59 output = MagickAppendImages(wand,MagickFalse); 60 wand = DestroyMagickWand(wand); /* finished - could swap here */ 61 62 /* Final output */ 63 status = MagickWriteImage(output,"show:"); 64 if (status == MagickFalse) 65 ThrowWandException(output); 66 67 output = DestroyMagickWand(output); 68 69 MagickWandTerminus(); 70 } 71 72
