A objc program that clicks the "markup" button in "com.apple.screencaptureui" application 's "ScreenshotAnnotationWindow" (titled "Screenshot")

clickScreenshotWindowMarkupButton.m

// compile with: cc clickScreenshotWindowMarkupButton.m -o clickScreenshotWindowMarkupButton -framework Cocoa
// This program clicks the "markup" button in "com.apple.screencaptureui" application 's "ScreenshotAnnotationWindow" (titled "Screenshot")
// Mostly written by the obviously-dumber-than-first-launched ChatGPT 4 Classic. No rights reserved.

#import <Foundation/Foundation.h>
#import <AppKit/AppKit.h>

// Function to find the PID using bundle identifier
pid_t pidForBundleIdentifier(NSString *bundleIdentifier) {
    NSArray *apps = [NSRunningApplication runningApplicationsWithBundleIdentifier:bundleIdentifier];
    if (apps.count > 0) {
        return [[apps firstObject] processIdentifier];
    }
    return -1;
}

void clickMarkupButton(AXUIElementRef element) {
    // Check if the current element is a button
    CFStringRef role;
    AXUIElementCopyAttributeValue(element, kAXRoleAttribute, (CFTypeRef *)&role);
    if (role && CFStringCompare(role, kAXButtonRole, 0) == kCFCompareEqualTo) {
        // Check for label "markup"
        CFStringRef label;
        AXUIElementCopyAttributeValue(element, kAXDescriptionAttribute, (CFTypeRef *)&label);
        if (label && CFStringCompare(label, CFSTR("markup"), 0) == kCFCompareEqualTo) {
            // Perform a press action on the 'markup' button
            AXUIElementPerformAction(element, kAXPressAction);
            CFRelease(label);
            CFRelease(role);
            return;
        }
        if (label) CFRelease(label);
    }
    if (role) CFRelease(role);

    // Recursively check children
    CFArrayRef children;
    AXUIElementCopyAttributeValue(element, kAXChildrenAttribute, (CFTypeRef *)&children);
    if (children) {
        CFIndex count = CFArrayGetCount(children);
        for (CFIndex i = 0; i < count; i++) {
            AXUIElementRef child = (AXUIElementRef)CFArrayGetValueAtIndex(children, i);
            clickMarkupButton(child);
        }
        CFRelease(children);
    }
}

int main(int argc, const char * argv[]) {
    @autoreleasepool {
        // Get the PID using the bundle identifier
        pid_t pid = pidForBundleIdentifier(@"com.apple.screencaptureui");
        if (pid == -1) {
            NSLog(@"Application with bundle ID 'com.apple.screencaptureui' not found.");
            return 1;
        }

        // Create an accessibility element for the application using its PID
        AXUIElementRef screencaptureui = AXUIElementCreateApplication(pid);
        
        // Get the window titled 'Screenshot'
        AXUIElementRef window = NULL;
        CFArrayRef windows = NULL;
        AXUIElementCopyAttributeValue(screencaptureui, kAXWindowsAttribute, (CFTypeRef *)&windows);
        if (windows) {
            for (CFIndex i = 0; i < CFArrayGetCount(windows); i++) {
                AXUIElementRef currentWindow = (AXUIElementRef)CFArrayGetValueAtIndex(windows, i);
                CFStringRef title;
                AXUIElementCopyAttributeValue(currentWindow, kAXTitleAttribute, (CFTypeRef *)&title);
                
                if (CFStringCompare(title, CFSTR("Screenshot"), 0) == kCFCompareEqualTo) {
                    window = CFRetain(currentWindow);
                    CFRelease(title);
                    break;
                }
                if (title) CFRelease(title);
            }
            CFRelease(windows);
        }

        if (!window) {
            NSLog(@"No window with title 'Screenshot' found.");
            CFRelease(screencaptureui);
            return 1;
        }

        // Recursively search and click the 'Markup' button
        clickMarkupButton(window);

        CFRelease(window);
        CFRelease(screencaptureui);
    }
    return 0;
}