GetCharWidth32W function (wingdi.h)

Article
11/20/2024

The GetCharWidth32 function retrieves the widths, in logical coordinates, of consecutive characters in a specified range from the current font.

Syntax

BOOL GetCharWidth32W(
  [in]  HDC   hdc,
  [in]  UINT  iFirst,
  [in]  UINT  iLast,
  [out] LPINT lpBuffer
);

Parameters

[in] hdc

A handle to the device context.

[in] iFirst

The first character in the group of consecutive characters.

[in] iLast

The last character in the group of consecutive characters, which must not precede the specified first character.

[out] lpBuffer

A pointer to a buffer that receives the character widths, in logical coordinates.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero.

Remarks

GetCharWidth32 cannot be used on TrueType fonts. To retrieve character widths for TrueType fonts, use GetCharABCWidths.

The range is inclusive; that is, the returned widths include the widths of the characters specified by the iFirstChar and iLastChar parameters.

If a character does not exist in the current font, it is assigned the width of the default character.

Examples

For an example, see "Displaying Keyboard Input" in Using Keyboard Input.

Note

The wingdi.h header defines GetCharWidth32 as an alias that automatically selects the ANSI or Unicode version of this function based on the definition of the UNICODE preprocessor constant. Mixing usage of the encoding-neutral alias with code that is not encoding-neutral can lead to mismatches that result in compilation or runtime errors. For more information, see Conventions for Function Prototypes.

Requirements

Requirement	Value
Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Target Platform	Windows
Header	wingdi.h (include Windows.h)
Library	Gdi32.lib
DLL	Gdi32.dll

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