LDialogColor::DoModalRemapHue

#include "ltwrappr.h"

virtual L_INT LDialogColor::DoModalRemapHue(hWndOwner)

HWND hWndOwner;

/* handle of the window which owns the dialog */

Displays the Remap Hue dialog box, and gets the options for LBitmap::RemapHue.

Parameter

Description

hWndOwner

Handle of the window which owns the dialog.

Returns

SUCCESS_DLG_OK

The "OK" button was pressed, and the dialog exited successfully.

SUCCESS_DLG_CANCEL

The "Cancel" button was pressed, and the dialog exited successfully.

< 1

An error occurred. Refer to Return Codes.

Comments

LDialogColor::SetRemapHueParams must be called before using this function to set the initial values for the dialog. You can get the updated REMAPHUEDLGPARAMS with the values entered by the user through the dialog by using LDialogColor::GetRemapHueParams.

The Remap Hue dialog is shown in the following figure:

image\RemapHue.gif

This dialog has the following fields:

Channel Drop-down list box:

Use this to select the channel to remap. There are three choices:

- Hue: remaps the Hue channel, for the values within the mask range.

- Saturation: remaps the Saturation channel, for the values within the mask range.

- Value: remaps the Value channel, for the values within the mask range.

Curve Mode Drop-down list box:

Use this to select the curve mode to use when remapping. There are four choices:

- image\Control_Curve_Mode_Curve.gif Curve: remaps the selected channel using curve data.

- image\Control_Curve_Mode_Linear.gif Linear: remaps the selected channel using linear data.

- image\Control_Curve_Mode_Exponential.gif Exponential: remaps the selected channel using exponential data, which is affected by the Factor value.

- image\Control_Curve_Mode_Logarithm.gif Logarithm: remaps the selected channel using logarithmic data, which is affected by the Factor value.

Factor Edit box:

Use this to set the factor of the Exponential/Logarithm curve. Enter the value directly in the edit box or use the arrows to set the desired value.

Flip Buttons:

Use these buttons to flip the curve if the Curve Mode is either Curve or Linear. The following options are available:

- image\Control_Curve_Flip_Both.gif Both. Flip the curve vertically and horizontally.

- image\Control_Curve_Flip_Vertically.gif Vertically. Flip the curve vertically.

- image\Control_Curve_Flip_Horizontal.gif Horizontally. Flip the curve horizontally.

Mask Multi-Slider:

Use the Mask Multi-slider Control to specify the range of values for which to apply the changes specified by the channel, the Curve mode and the factor. The first marker from the left is the minimum value of the range, and the second is the maximum value.

Reset Button:

Use the Reset button to set the curve of the current channel to the default values.

Reset All Button:

Use the Reset All button to set the curve for all the channels to default values.

Load Button:

Use the Load button to load an "*.lrh" file that contains Remap Hue curve settings, using the Load dialog. The loaded file will set a new curve for each channel. NOTE: Loading curve settings will overwrite all current settings for all channels!

Save Button:

Use the Save button to save all the curve settings for all the channels into an "*.lrh" file. This allows you set the same curve settings for other images by re-loading the file.

Required DLLs and Libraries

LTDLGCLR
LTDLGKRN
LTDLGUTL
LTDLGCTRL
LTDLGCOM
LTDIS
LTIMG

For a listing of the exact DLLs and Libraries needed, based on the toolkit version, refer to Files To Be Included With Your Application

See Also

Functions:

LDialogBase::Initialize, LBitmap::RemapHue

Topics:

Using Imaging Common Dialog

 

Curve Control

Example

void TestFunction(LBitmap * pBitmap, HWND hWnd)
{
   LDialogColor DlgColor;
   DlgColor.Initialize(DLG_INIT_COLOR );
   DlgColor.SetBitmap(pBitmap);

   REMAPHUEDLGPARAMS DlgParams;

   memset ( &DlgParams, 0, sizeof ( REMAPHUEDLGPARAMS ) ) ;

   DlgParams.uStructSize = sizeof ( REMAPHUEDLGPARAMS ) ;

   DlgColor.EnableCallBack(FALSE);
   DlgColor.EnablePreview(TRUE);
   DlgColor.EnableAutoProcess(TRUE);
   DlgColor.EnableToolbar(TRUE);
   DlgColor.SetRemapHueParams(&DlgParams) ;
   DlgColor.DoModalRemapHue(hWnd);

   // Gets the updated values for the structure
   DlgColor.GetRemapHueParams(&DlgParams, sizeof(DlgParams)) ;
   DlgColor.Free();

   if ( NULL != DlgParams.puMaskLookup )
   {
      GlobalFree ( DlgParams.puMaskLookup ) ;
   }

   if ( NULL != DlgParams.puHueLookup )
   {
      GlobalFree ( DlgParams.puHueLookup ) ;
   }

   if ( NULL != DlgParams.puSaturationLookup )
   {
      GlobalFree ( DlgParams.puSaturationLookup ) ;
   }

   if ( NULL != DlgParams.puValueLookup )
   {
      GlobalFree ( DlgParams.puValueLookup ) ;
   }
}