JPEGWEBTUNERDLGPARAMS

Summary

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

Syntax

typedef struct _JPEGWEBTUNERDLGPARAMS 
{ 
   L_UINT uStructSize; 
   pBITMAPHANDLE pBitmap; 
   L_BOOL bZoomToFit; 
   L_INT nQuality; 
   L_INT nFormat; 
   L_BOOL bProgressive; 
   L_BOOL bWithStamp; 
   L_UINT32 uDlgFlags; 
   LTCOMMDLGHELPCB pfnHelpCallback; 
   L_VOID  *pHelpCallBackUserData; 
} JPEGWEBTUNERDLGPARAMS, * LPJPEGWEBTUNERDLGPARAMS; 

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:

nQuality

Value that indicates the degree of loss in the compression process. Valid values are between 2 (highest quality) and 255 (smallest file size) For more information, refer to the Compression Quality Factors.

nFormat

Value that indicates the sub format to use. Possible values are:

bProgressive

Flag that indicates whether to save the JPEG image as a progressive image. Progressive images are useful when transmitting images, because the first part of the file contains the full dimensions of the image. Therefore, in a paint-while-load routine, you can display the whole image, and then progressively clarify it as the rest of the file loads. Possible values are:

bWithStamp

Flag that indicates whether to save the image with a stamp. A stamp is a small thumbnail image saved in addition to the normal image in same file. Possible values are:

uDlgFlags

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

pfnHelpCallback

Ignored.

pHelpCallBackUserData

Ignored.

Usage

• LDialogWeb::GetJPEGWebTunerParams
• LDialogWeb::SetJPEGWebTunerParams