References ▼
The UNDERLAYDLGPARAMS structure provides information used to initialize the dialog box created by the LDialogImageEffect::DoModalUnderlay function. After the user closes the dialog box, this structure is updated with information about the user's selections.
typedef struct _UNDERLAYDLGPARAMS{L_UINT uStructSize;pBITMAPHANDLE pBitmap;L_BOOL bZoomToFit;L_UINT32 uUnderlayFlags;L_INT nUnderlayBitmapIndex;LPDLGBITMAPLIST pBitmapList;L_UINT32 uDlgFlags;LTCOMMDLGHELPCB pfnHelpCallback;L_VOID *pHelpCallBackUserData;} UNDERLAYDLGPARAMS, * LPUNDERLAYDLGPARAMS;
Size of this structure, in bytes. Use the sizeof operator to calculate this value.
Pointer to the bitmap handle that references the bitmap used for preview or processing.
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)". |
Flags that indicate how the underlying image is to be positioned. Possible values are:
| Value | Meaning |
|---|---|
| UB_TILE | [0x00] Tile the underlay image. This repeats the underlying image, so that it fills the target image. |
| UB_STRETCH | [0x01] Stretch the underlay image to fit the dimensions of the target image. |
Index of the selected tile bitmap to use for underlay. This index points to an entry in pBitmapList member.
Pointer to a DLGBITMAPLIST structure that references the images in the image picker. Set this to initialize the image picker in the dialog.
User interface flags for this dialog, which determines the layout and action of the dialog. Possible values are:
| Value | Meaning |
|---|---|
| DLG_UNDERLAY_AUTOPROCESS | [0x0001] process the image on OK. The pBitmap member of this structure should contain a valid bitmap. |
| DLG_UNDERLAY_SHOW_CONTEXTHELP | [0x0002] dialog should contain a context sensitive help icon. |
| DLG_UNDERLAY_SHOW_PREVIEW | [0x0004] show a preview of the image in the dialog. The pBitmap member of this structure should contain a valid bitmap. |
| DLG_UNDERLAY_SHOW_TOOL_ZOOMLEVEL | [0x0008] show the "Zoom to fit" and "Zoom Normal" toolbar buttons. The DLG_UNDERLAY_SHOW_PREVIEW flag must be set in order to show these buttons. |
Ignored.
Ignored.