title: Delphi: 'Property ClientHeight does Not Exist'
body: <p>My Delphi program builds and compiles fine, however as soon as it is run in the debug mode, I get the following error;</p>
  
  <blockquote>
    <p>Property ClientHeight does Not Exist</p>
  </blockquote>
  
  <p>After looking through all of the .DFM file sources, in every form the code is there which is;</p>
  
  <blockquote>
    <p>ClientHeight = 111</p>
  </blockquote>
  
  <p>I'm not understanding where I go wrong here?</p>