Correct optical issue in Text editor ActiveX control source (C++6.0)

We have an own version of a Text editor control (other GUIDs and ProgIDs). In other respects, it is the same as the original version. We will provide the source code on request. We will also provide the original documentation for the control usage. 1) The Text editor has a feature ‘HighLightLine’. This shows a yellow background in the line where the cursor is. (The yellow can be any other color, yellow is just the preset.) Depending on the selected font and font size, this background is not erased perfectly. It leaves visible traces This must be fixed for all fonts and sizes. No performance degradation allowed. 2) The DocumentEnd method sets the Wait cursor. Not wanted, so it shall be commented out. 3) The control compiles error-free, but throws 4 warnings. The warnings shall be fixed. If that is too much effort we want an explanation what the warnings mean, and what the consequences are. --- The changes may not result in a performance degradation! The Text editor ActiveX control is intended to be used with VB6. --- We will pay in one milestone only, not partial. Final tests will happen here inhouse, based on our own compile result from the source. The job should be ready within one week (or to be discussed).