how to capture loading which appears for 2,3 seconds

For transient elements, rely on runtime identification, polling, and property checks, with image-based detection as a fallback. Avoid using the Object Repository for elements that appear briefly. In TestComplete, the recommended approach is runtime/dynamic detection combined with polling. This works for both web and desktop applications.

1. Runtime / Dynamic Recognition

• Use FindChild or FindAllChildren on the parent window or page.
• Match the element by properties like id, className, WndClass, or other unique identifiers.
• This works because short-lived elements may not exist when the test starts.

2. Polling / Frequent Checks

• Loop with short delays (100–200 ms) to repeatedly check for the element during its brief appearance.
• Ensures detection even if it’s visible only for a few seconds.

3. Property-Based Waiting

• Use WaitProperty("Visible", true, timeout) or WaitProperty("Exists", true, timeout) once you locate the element.
• Synchronizes your test with UI changes.

4. Image-Based Recognition (Fallback)

• If the element is hard to access in the DOM or control tree, capture it visually using Picture, FindBitmap, or PictureCheckPoint.
• Works for web and desktop apps alike.

Web-Specific Example (JavaScript)

function CaptureLoadingIcon() {
    var parent = Sys.Browser("*").Page("*"); // Web page object
    var found = false;

    for (var i = 0; i < 30; i++) { // check every 100ms for ~3 seconds
        var icon = parent.FindChild("className", "loading-icon", 0); // replace with actual property
        if (icon != null && icon.Visible) {
            Log.Message("Loading icon appeared");
            found = true;
            break;
        }
        Delay(100);
    }

    if (!found) {
        Log.Message("Loading icon did not appear");
    }
}

Note: This snippet is web-specific, but the same approach applies to desktop applications. Replace the parent object with the main window or panel containing the loading icon, and adjust the property used in FindChild accordingly.

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