Simple Button Example

C4WorkSpace.m

#import "C4WorkSpace.h"

@implementation C4WorkSpace {
    C4Button *b;
    BOOL shiftDir;
}

-(void)setup {
    b = [C4Button buttonWithType:ROUNDEDRECT];
    b.center = self.canvas.center;
    [self.canvas addSubview:b];
    [b runMethod:@"shift" target:self forEvent:TOUCHUPINSIDE];
}

-(void)shift {
    CGPoint center = b.center;
    if(shiftDir == NO) center.x += [C4Math randomInt:100]/25.0f;
    else center.y += [C4Math randomInt:100]/25.0f;
    b.center = center;
    shiftDir = !shiftDir;
}

@end