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("Read 4 images, then set index 1 and read more individual images\n"); 34 printf("Result shoud be: 01 654 23\n"); 35 36 MagickWandGenesis(); 37 38 wand = NewMagickWand(); 39 input = NewMagickWand(); 40 41 status = MagickReadImage(input, "font_0.gif" ) 42 && MagickReadImage(input, "font_1.gif" ) 43 && MagickReadImage(input, "font_2.gif" ) 44 && MagickReadImage(input, "font_3.gif" ); 45 if (status == MagickFalse) 46 ThrowWandException(input); 47 48 status = MagickAddImage(wand, input); 49 if (status == MagickFalse) 50 ThrowWandException(wand); 51 input=DestroyMagickWand(input); /* finished */ 52 53 MagickSetIteratorIndex(wand, 1); 54 55 status = MagickReadImage(wand, "font_4.gif" ); 56 if (status == MagickFalse) 57 ThrowWandException(wand); 58 59 status = MagickReadImage(wand, "font_5.gif" ); 60 if (status == MagickFalse) 61 ThrowWandException(wand); 62 63 status = MagickReadImage(wand, "font_6.gif" ); 64 if (status == MagickFalse) 65 ThrowWandException(wand); 66 67 /* append all images together to create the output wand */ 68 MagickResetIterator(wand); /* append all images */ 69 output = MagickAppendImages(wand,MagickFalse); 70 wand = DestroyMagickWand(wand); /* finished - could swap here */ 71 72 /* Final output */ 73 status = MagickWriteImage(output,"show:"); 74 if (status == MagickFalse) 75 ThrowWandException(output); 76 77 output = DestroyMagickWand(output); 78 79 MagickWandTerminus(); 80 } 81 82
