ChooseColor function

Articolo
08/31/2015

Creates a Color dialog box that enables the user to select a color.

Syntax

BOOL WINAPI ChooseColor(
  _Inout_ LPCHOOSECOLOR lpcc
);

Parameters

lpcc [in, out]
Type: LPCHOOSECOLOR

A pointer to a CHOOSECOLOR structure that contains information used to initialize the dialog box. When ChooseColor returns, this structure contains information about the user's color selection.

Return value

Type: BOOL

If the user clicks the OK button of the dialog box, the return value is nonzero. The rgbResult member of the CHOOSECOLOR structure contains the RGB color value of the color selected by the user.

If the user cancels or closes the Color dialog box or an error occurs, the return value is zero. To get extended error information, call the CommDlgExtendedError function, which can return one of the following values:

CDERR_DIALOGFAILURE

CDERR_FINDRESFAILURE

CDERR_MEMLOCKFAILURE

CDERR_INITIALIZATION

CDERR_NOHINSTANCE

CDERR_NOHOOK

CDERR_LOADRESFAILURE

CDERR_NOTEMPLATE

CDERR_LOADSTRFAILURE

CDERR_STRUCTSIZE

CDERR_MEMALLOCFAILURE

Remarks

The Color dialog box does not support palettes. The color choices offered by the dialog box are limited to the system colors and dithered versions of those colors.

You can provide a CCHookProc hook procedure for a Color dialog box. The hook procedure can process messages sent to the dialog box. To enable a hook procedure, set the CC_ENABLEHOOK flag in the Flags member of the CHOOSECOLOR structure and specify the address of the hook procedure in the lpfnHook member.

Examples

For an example, see Choosing a Color.

Requirements

Minimum supported client	Windows 2000 Professional [desktop apps only]
Minimum supported server	Windows 2000 Server [desktop apps only]
Header	Commdlg.h (include Windows.h)
Library	Comdlg32.lib
DLL	Comdlg32.dll
Unicode and ANSI names	ChooseColorW (Unicode) and ChooseColorA (ANSI)

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