Question

I have a window which has 5 child windows. How can I close a child window without closing the parent?

Answer 1

Presumably you have handles for the child windows? If so, then just use DestroyWindow.

EDIT:

You should define a WndProc method in your main ‘window’ to handle callbacks from your child windows. You use this to define what you want to do with each message. In your case, you want to call destroyWindow.

Something like this:

LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
    switch(msg)
    {
        case WM_CLOSE:
            DestroyWindow(hwnd);
        break;
        default:
            return DefWindowProc(hwnd, msg, wParam, lParam);
    }
    return 0;
}