References ▼
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 ;
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.
| 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)". | |
| 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: | |
| Value | Meaning | |
| FILE_JFIF | JPEG File Interchange Format with YUV 4:4:4 color space and Lossless | |
| FILE_LEAD1JFIF | JPEG File Interchange Format with YUV 4:2:2 color space | |
| FILE_LEAD2JFIF | JPEG File Interchange Format with YUV 4:1:1 color space | |
| 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: | |
| Value | Meaning | |
| TRUE | Save the JPEG image as a progressive image. | |
| FALSE | Do not save the JPEG image as a progressive image. | |
| 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: | |
| Value | Meaning | |
| TRUE | Save the image with a stamp. | |
| FALSE | Save the image without a stamp. | |
| uDlgFlags | User interface flags for this dialog, which determine the layout and action of the dialog. Possible values are: | |
| Value | Meaning | |
| DLG_JPEGWEBTUNER_SHOW_CONTEXTHELP | [0x00000001] Dialog should contain a context sensitive help icon. | |
| DLG_JPEGWEBTUNER_SHOW_INFORMATION | [0x00000008] Show the Information group of controls. | |
| DLG_JPEGWEBTUNER_SHOW_SAVETHUMBNAIL | [0x00000010] Show the Save Thumbnail control. | |
| DLG_JPEGWEBTUNER_SHOW_OPTIONS | [0x00000100] Show the Options group of controls. | |
| DLG_JPEGWEBTUNER_SHOW_EXPORT | [0x00000200] Show the Export button instead of the OK button. | |
| pfnHelpCallback | Ignored. | |
| pHelpCallBackUserData | Ignored. | |