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CharUpper The CharUpper function converts a character string or a single character to uppercase. If the operand is a character string, the function converts the characters in place. This function supersedes the AnsiUpper function.
VB4-32,5,6
Declare Function CharUpper Lib "user32" Alias "CharUpperA" (ByVal lpsz As String) As String |
VB.NET
System.String.ToUpper |
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Operating Systems Supported |
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Requires Windows NT 3.1 or later; Requires Windows 95 or later |
- lpsz
Pointer to a null-terminated string or specifies a single character. If the high-order word of this parameter is zero, the low-order word must contain a single character to be converted. |
If the operand is a character string, the function returns a pointer to the converted string. Since the string is converted in place, the return value is equal to lpsz.
If the operand is a single character, the return value is a 32-bit value whose high-order word is zero, and low-order word contains the converted character.
There is no indication of success or failure. Failure is rare. |
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