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 *input, 28 *output; 29 30 MagickBooleanType 31 status; 32 33 printf("Check prepend when using 'FirstIterator' on empty wand\n"); 34 printf("Result shoud be: 3210\n"); 35 36 MagickWandGenesis(); 37 38 wand = NewMagickWand(); 39 40 MagickSetFirstIterator(wand); /* set first iterator to empty wand */ 41 42 status = MagickReadImage(wand, "font_0.gif" ); 43 if (status == MagickFalse) 44 ThrowWandException(wand); 45 46 status = MagickReadImage(wand, "font_1.gif" ); 47 if (status == MagickFalse) 48 ThrowWandException(wand); 49 50 status = MagickReadImage(wand, "font_2.gif" ); 51 if (status == MagickFalse) 52 ThrowWandException(wand); 53 54 status = MagickReadImage(wand, "font_3.gif" ); 55 if (status == MagickFalse) 56 ThrowWandException(wand); 57 58 /* append all images together to create the output wand */ 59 MagickResetIterator(wand); /* append all images */ 60 output = MagickAppendImages(wand,MagickFalse); 61 wand = DestroyMagickWand(wand); /* finished - could swap here */ 62 63 /* Final output */ 64 status = MagickWriteImage(output,"show:"); 65 if (status == MagickFalse) 66 ThrowWandException(output); 67 68 output = DestroyMagickWand(output); 69 70 MagickWandTerminus(); 71 } 72 73
