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Owner-Drawn Status Windows
You can define individual parts of a status window to be owner-drawn parts.
Using this technique gives you more control than you would otherwise have over
the appearance of the window part. For example, you can display a bitmap rather
than text in a part or draw text using a different font.
To define a window part as owner-drawn, send the SB_SETTEXT message to the status window, specifying the part and the SBT_OWNERDRAW
drawing technique. When SBT_OWNERDRAW is specified, the lParam parameter is a 32-bit application-defined value that the application can use
when drawing the part. For example, you can specify a font handle, a bitmap
handle, a pointer to a string, and so on.
When a status window needs to draw an owner-drawn part, it sends the WM_DRAWITEM message to the parent window. The wParam parameter of the message is the child window identifier of the status window,
and the lParam parameter is a pointer to a DRAWITEMSTRUCT structure. The parent window uses the information in the structure to draw
the part. For an owner-drawn part of a status window, DRAWITEMSTRUCT contains the following information.
Member
| Description
| CtlType
| Undefined; do not use.
| CtlID
| Child-window identifier of the status window.
| itemID
| Zero-based index of the part to be drawn.
| itemAction
| Undefined; do not use.
| itemState
| Undefined; do not use.
| hwndItem
| Handle to the status window.
| hDC
| Handle to the device context of the status window.
| rcItem
| Coordinates of the window part to be drawn. The coordinates are relative to
the upper left corner of the status window.
| itemData
| Application-defined 32-bit value specified in the lParam parameter of the SB_SETTEXT message.
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