typedef struct _LOCALHISTOEQUALIZEDLGPARAMS
{
L_UINT uStructSize;
pBITMAPHANDLE pBitmap;
L_BOOL bZoomToFit;
L_INT nWidth;
L_INT nHeight;
L_INT nXExtention;
L_INT nYExtention;
L_UINT uType;
L_UINT uSmooth;
L_UINT32 uDlgFlags;
LTCOMMDLGHELPCB pfnHelpCallback;
L_VOID *pHelpCallBackUserData;
} LOCALHISTOEQUALIZEDLGPARAMS, * LPLOCALHISTOEQUALIZEDLGPARAMS;
The LOCALHISTOEQUALIZEDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogColor::DoModalLocalHistoEqualize function. After the user closes the dialog box, this structure is updated with information about the user's selections.
Member | Description | |
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 "Zoom to fit". | |
FALSE | Set the initial zoom level to "Normal (1:1)". | |
nWidth | The width of the local histogram equalizer rectangle, in pixels. The width should be more than zero. | |
nHeight | The height of the local histogram equalizer rectangle, in pixels. The height should be more than zero. | |
nXExtention | The extension of the width of the local histogram equalizer rectangle, in pixels. | |
nYExtention | The extension of the height of the local histogram equalizer rectangle, in pixels. | |
uType | Flag that indicates which color space to equalize. Possible values are: | |
Value | Meaning | |
RGB_SPACE | [0x0001] Linearize the number of pixels across the RGB color space. (Separated channels) | |
YUV_SPACE | [0x0002] Linearize the number of pixels across the YUV color space. (Best results) | |
GRAY_SPACE | [0x0004] Linearize the number of pixels per gray level in a gray level representation of the image. |
uSmooth | Size of the area to be used when smoothing the edges between localized blocks. Possible values range from 0 to 7, but if nHeight is less than or equal to 7 then the maximum value for this item is nHeight - 1. | |
uDlgFlags | User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are: | |
Value | Meaning | |
DLG_LOCALHISTOEQUALIZE_SHOW_CONTEXTHELP | [0x00000002] dialog should contain a context sensitive help icon. | |
DLG_LOCALHISTOEQUALIZE_SHOW_APPLY | [0x00000080] Show the Apply button in the dialog. The dialog will not apply any effect unless the user presses the Apply button. | |
pfnHelpCallback | Ignored. | |
pHelpCallBackUserData | Ignored. |