lpTitle

lpTitle is a conventional parameter name seen in Windows API programming that refers to a string supplying the title or caption for a window, dialog, or similar UI element. It is not a standalone API; rather, it appears in documentation and example code as a descriptive variable name for the string that appears in a title bar or dialog header.

Origin and type: The “LP” prefix reflects historical Windows data-type naming, standing for Long Pointer. In modern Win32 programming, the actual type of the string is determined by the function and build settings, typically a pointer to a character string such as LPCSTR or LPCWSTR (ANSI or Unicode). The identifier lpTitle itself is simply a variable name, while the underlying type is a pointer to a null-terminated string.

Typical usage: Many functions that create or display a window or dialog accept a string parameter used as a title. In such contexts, lpTitle may be passed to supply the text shown in the window’s title bar or dialog header. It is common to see a parameter named lpWindowName or lpCaption for similar purposes; some code samples may refer to the title parameter as lpTitle. The value may be null to indicate that no title should be shown, depending on the specific API.

Notes: lpTitle is not a reserved keyword and can be any valid variable name. Always consult the exact API reference for the function you are using to determine the required encoding (ANSI vs. Unicode), nullability, and how the title is rendered. In cross-platform or Unicode-aware code, prefer the appropriate Unicode types and string literals to ensure correct behavior.