L_UINT32 uFlag;

/* flags */

L_INT nCtlID;

/* the control ID */

L_VOID * pUserData;

/* pointer to additional parameters */

Parameter

Description

uFlag

Flags that determine the options dialog that the Help button was clicked from. Possible values are:

Value

Meaning

SCRDLG_HELP_SETCAPTUREOPTION

[0x01] Capture options dialog.

SCRDLG_HELP_CAPTUREAREAOPTION

[0x02] Capture area options dialog.

SCRDLG_HELP_CAPTUREOBJECTOPTION

[0x03] Capture object options dialog.

SCRDLG_HELP_CAPTUREFROMEXE

[0x04] Capture from exe file dialog.

nCtlID

Value that represents the control ID. If the user pressed F1 or clicked the context help button "?" and then selected a control on the dialog box, one of the following values is returned. Otherwise, the value is -1

Value

Meaning

LT_SCRDLG_IDC_HOTKEY

[27079] Hotkey field.

LT_SCRDLG_IDC_DELAY

[27040] Delay field.

LT_SCRDLG_IDC_REPEAT

[27043] Repeat field.

LT_SCRDLG_IDC_INTERVAL

[27048] Interval field.

LT_SCRDLG_IDC_CANCELKEY

[27085] Cancel key field.

LT_SCRDLG_IDC_USE_ESC

[27091] Use Esc check box.

LT_SCRDLG_IDC_CAP_CURSOR

[27081] Capture cursor combo box.

LT_SCRDLG_IDC_STAT_CURSOR

[27083] Status cursor combo box.

LT_SCRDLG_IDOK

[1] Ok button.

LT_SCRDLG_IDCANCEL

[2] Cancel button.

LT_SCRDLG_IDC_RESTREE

[27035] Resource tree.

LT_SCRDLG_IDC_COLOR_GROUP

[27092] Color group.

LT_SCRDLG_IDC_R_TEXT

[27070] Label of Red channel.

LT_SCRDLG_IDC_R_SLIDER

[27055] Slider of Red channel.

LT_SCRDLG_IDC_RED

[27025] Red channel.

LT_SCRDLG_IDC_G_TEXT

[27072] Green channel of text color.

LT_SCRDLG_IDC_G_SLIDER

[27057] Green channel of slider color.

LT_SCRDLG_IDC_GREEN

[27027] Green channel.

LT_SCRDLG_IDC_B_TEXT

[27074] Blue channel of text color.

LT_SCRDLG_IDC_B_SLIDER

[27059] Blue channel of slider color.

LT_SCRDLG_IDC_BLUE

[27031] Blue channel.

LT_SCRDLG_IDC_RESVIEW

[27029] Resource view.

LT_SCRDLG_IDC_PREV_STATIC

[27068] Previous static.

LT_SCRDLG_IDC_FILENAME

[27076] File name.

LT_SCRDLG_IDC_CAPTURE

[27053] Capture.

LT_SCRDLG_IDC_COUNT

[27061] Count.

LT_SCRDLG_IDC_SELECTION

[27078] Selection.

LT_SCRDLG_IDC_BROWSE

[27046] Browse.

LT_SCRDLG_IDC_COMBO_DRAW_CURSOR

[27075] Draw cursor combo box.

LT_SCRDLG_IDC_EDIT_BORDER_WIDTH

[27089] Edit border width.

LT_SCRDLG_IDC_CHECK_INVERT_OBJECT

[27090] Invert object checkbox.

LT_SCRDLG_IDC_CHECK_ENABLE_KEYBOARD

[27036] Enable keyboard checkbox.

LT_SCRDLG_IDC_BUTTON_OK

[27084] Ok button.

LT_SCRDLG_IDC_BUTTON_DEFAULT

[27000] Default button.

LT_SCRDLG_IDC_BUTTON_CANCEL

[27086] Cancel button.

LT_SCRDLG_IDC_COMBO_AREA_TYPE

[27080] Area type combo box.

LT_SCRDLG_IDC_COMBO_LINE_STYLE

[27071] Line style combo box.

LT_SCRDLG_IDC_COMBO_FILL_PATTERN

[27073] File pattern combo box.

LT_SCRDLG_IDC_EDIT_ELLIPSE_WIDTH

[27087] Edit ellipse width.

LT_SCRDLG_IDC_EDIT_ELLIPSE_HEIGHT

[27088] Edit ellipse height.

LT_SCRDLG_IDC_CHECK_INCLUDE_CURSOR

[27034] Check include cursor.

LT_SCRDLG_IDC_CHECK_USE_CROSS_LINES_CURSOR

[27067] Use cross lines cursor checkbox.

LT_SCRDLG_IDC_CHECK_ENABLE_REGION

[27041] Enable region checkbox.

LT_SCRDLG_IDC_CHECK_SHOW_DRAW_CURSOR

[27063] Show draw cursor checkbox.

LT_SCRDLG_IDC_COMBO_INFOWND_X

[27050] Information Window X position combo box.

LT_SCRDLG_IDC_COMBO_INFO_WIDTH

[27045] Information Window width.

LT_SCRDLG_IDC_COMBO_INFOWND_Y

[27069] Information Window Y position combo box.

LT_SCRDLG_IDC_COMBO_INFO_HEIGHT

[27082] Information Window height.

LT_SCRDLG_IDC_EDIT_INFO_X

[27052] Edit Information Window X position.

LT_SCRDLG_IDC_EDIT_INFO_WIDTH

[27056] Edit Information Window width.

LT_SCRDLG_IDC_EDIT_INFO_Y

[27054] Edit information Window Y position.

LT_SCRDLG_IDC_EDIT_INFO_HEIGHT

[27058] Edit Information Window height.

LT_SCRDLG_IDC_COMBO_ZOOM

[27026] Zoom combo box.

LT_SCRDLG_IDC_CHECK_SHOW_CURSORPOS

[27038] Show cursor position checkbox.

LT_SCRDLG_IDC_CHECK_SHOW_INFOWINDOW

[27032] Show Information Window checkbox.

LT_SCRDLG_IDC_CHECK_SHOW_AREASIZE

[27028] Show Area Size checkbox.

LT_SCRDLG_IDC_CHECK_SENSITIVE_INFO

[27030] Sensitive Information Window checkbox.

LT_SCRDLG_IDC_CHECK_OPAQUE_TEXT

[27062] Opaque text checkbox.

LT_SCRDLG_IDC_COMBO_COLORS

[27077] Colors combo box.

LT_SCRDLG_IDC_STATIC_COLORS

[27065] Static colors.

LT_SCRDLG_IDC_BUTTON_COLORS

[27060] Colors button.

pUserData

Void pointer that you can use to pass one or more additional parameters that the help callback function needs.

To use this feature, assign a value to a variable or create a structure that contains as many fields as you need. Then, in this parameter, pass the address of the variable or structure, casting it to L_VOID *. The callback function, which receives the address in its own pUserData parameter, can cast it to a pointer of the appropriate data type to access your variable or structure.

If the additional parameters are not needed, you can pass NULL in this parameter.

LTSCR

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

Functions:

L_SetCaptureOptionDlg, L_CaptureAreaOptionDlg, L_CaptureObjectOptionDlg, L_CaptureFromExeDlg

Topics:

Support Functions: Callbacks

Implementing Screen Capture