GAMMAADJUSTMENTDLGPARAMS

typedef struct _GAMMAADJUSTMENTDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT nRedValue; 
   L_INT nGreenValue; 
   L_INT nBlueValue; 
   L_BOOL bAllChannels; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} GAMMAADJUSTMENTDLGPARAMS,  * LPGAMMAADJUSTMENTDLGPARAMS; 

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

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:

Value Meaning
TRUE Set the initial zoom level to be "zoom to fit".
FALSE Set the initial zoom level to be "Normal (1:1)".

nRedValue

A variable to be updated with the Red value entered in the dialog. Set this to indicate the initial value for the dialog. Possible values range from 10 to 500.

nGreenValue

A variable to be updated with the Green value entered in the dialog. Set this to indicate the initial value for the dialog. Possible values range from 10 to 500.

nBlueValue

A variable to be updated with the Blue value entered in the dialog. Set this to indicate the initial value for the dialog. Possible values range from 10 to 500.

bAllChannels

Flag that indicates whether the "All Channels" check box is checked in the dialog. Set this to initialize the dialog. Possible values are:

Value Meaning
TRUE The "All Channels" check box is checked.
FALSE The "All Channels" check box is not checked.

uDlgFlags

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

Value Meaning
DLG_GAMMAADJUSTMENT_SHOW_CONTEXTHELP [0x00000002] dialog should contain a context sensitive help icon.
DLG_GAMMAADJUSTMENT_FORCELINKCHANNELS [0x00000010] Force the dialog to apply "Link \all channels" at all times.

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Help Version 20.0.2019.9.19
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2019 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Common Dialog C++ Class Library Help