Still, all functions can easily be found in its only menu. Since we're talking about a tool here, this program doesn't really sport a fancy interface. You make use of the app crosshair icon to indicate which window you need the text from, and the app immediately displays it in its window. In terms of used mechanisms, the idea is pretty simple. It's of great help because it also copies whatever content it grabs to the clipboard, allowing you to further use it in your various queries.
To demonstrate owner-drawing with combo boxes create a combo box full of colors (two variations) and a combo with true-type fonts showing the actual image of the font.GetWindowText is an application designed to help users grab text from various application windows, where it would be otherwise difficult to copy that phrase, error code, or written line. The parent window (form) of an owner-drawn combo box (its owner) then fires the OnDrawItem event when a portion of the combo box needs to be painted. Instead it sends a WM_DRAWITEM message whenever a portion of the control needs to be repainted. Having done this, Windows no longer draws the control. In this case the application will receive the WM_MEASUREITEM Windows message and the OnMeasureItem event will be fired for each item - to specify the height of list items in the combo box. If list items are of varying height, like bitmaps of different size, an application can use the csOwnerDrawVariable style.If all list items in the combo box are the same height, such as strings or icons, an application can use the csOwnerDrawFixed style.
To create an owner-draw combo box, we set its Style property to csOwnerDrawFixed or csOwnerDrawVariable. An owner-drawn combo box can list/show information other than text strings - usually some graphical elements. As with menus (menu items), an application can create an owner-drawn combo box to take responsibility for painting list items.
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