HISTOCONTRASTDLGPARAMS

Summary

The HISTOCONTRASTDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogColor::DoModalHistoContrast function. After the user closes the dialog box, this structure is updated with information about the user's selections.

Syntax

typedef struct _HISTOCONTRASTDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT nChange; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} HISTOCONTRASTDLGPARAMS,  * LPHISTOCONTRASTDLGPARAMS; 

Members

uStructSize

Size of this structure, in bytes. Use the sizeof operator to calculate this value.

pBitmap

Ignored.

bZoomToFit

Flag that indicates the initial zoom level for previewing the image. Possible values are:

nChange

Amount to change the contrast. Possible values range from -1000 to 1000. Negative numbers decrease the contrast and positive numbers increase the contrast.

uDlgFlags

User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are:

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Usage

• LDialogColor::GetHistoContrastParams
• LDialogColor::SetHistoContrastParams