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("Add 3 sets of images after setting 'first' on empty wand\n"); 34 printf("Result shoud be: 678 345 012\n"); 35 36 MagickWandGenesis(); 37 38 wand = NewMagickWand(); 39 input = NewMagickWand(); 40 41 MagickSetFirstIterator(wand); 42 43 status = MagickReadImage(input, "font_0.gif" ) 44 && MagickReadImage(input, "font_1.gif" ) 45 && MagickReadImage(input, "font_2.gif" ); 46 if (status == MagickFalse) 47 ThrowWandException(input); 48 49 status = MagickAddImage(wand, input); 50 if (status == MagickFalse) 51 ThrowWandException(wand); 52 53 ClearMagickWand(input); 54 status = MagickReadImage(input, "font_3.gif" ) 55 && MagickReadImage(input, "font_4.gif" ) 56 && MagickReadImage(input, "font_5.gif" ); 57 if (status == MagickFalse) 58 ThrowWandException(input); 59 60 status = MagickAddImage(wand, input); 61 if (status == MagickFalse) 62 ThrowWandException(wand); 63 64 ClearMagickWand(input); 65 status = MagickReadImage(input, "font_6.gif" ) 66 && MagickReadImage(input, "font_7.gif" ) 67 && MagickReadImage(input, "font_8.gif" ); 68 if (status == MagickFalse) 69 ThrowWandException(input); 70 71 72 status = MagickAddImage(wand, input); 73 if (status == MagickFalse) 74 ThrowWandException(wand); 75 input=DestroyMagickWand(input); /* finished */ 76 77 /* append all images together to create the output wand */ 78 MagickResetIterator(wand); /* append all images */ 79 output = MagickAppendImages(wand,MagickFalse); 80 wand = DestroyMagickWand(wand); /* finished - could swap here */ 81 82 /* Final output */ 83 status = MagickWriteImage(output,"show:"); 84 if (status == MagickFalse) 85 ThrowWandException(output); 86 87 output = DestroyMagickWand(output); 88 89 MagickWandTerminus(); 90 } 91 92
