L_CaptureObjectOptionDlg

#include "l_bitmap.h"

L_LTSCR_API L_INT L_CaptureObjectOptionDlg(hParentWnd, uFlags, pObjectOptions, nUseDefault, pfnCallBack, pUserData)

L_HWND hParentWnd;

handle to the parent window

L_UINT uFlags;

flags

pLEADCAPTUREOBJECTOPTION pObjectOptions;

pointer to the object option structure

L_INT nUseDefault;

flag

LTSCRHELPCB pfnCallBack;

optional callback function

L_VOID * pUserData;

pointer to more parameters for the callback

Displays a dialog to retrieve the options for the L_CaptureSelectedObject function.

Parameter Description
hParentWnd Handle to the parent window.
uFlags Flags that determine the options dialog. Possible values are:
  Value Meaning
  NONE [0x0000] No "?" help button will be shown.
  SCRDLG_CAPTUREOBJECTOPTION_CONTEXTHELP [0x0004] Object options dialog context help. The "?" button will appear in the title bar if the pfnCallBack is not NULL.
pObjectOptions Pointer to a LEADCAPTUREOBJECTOPTION structure that contains with information about capturing an object.
nUseDefault If TRUE, the dialog will start with default values; Otherwise the dialog will use the values specified by the pLEADCAPTUREOBJECTOPTION structure. These values must be a valid values or the dialog will return an error code.
pfnCallBack Optional help callback function for displaying help dialog.

If you do not provide help callback function, pass NULL as the value of this parameter.

If you do provide help callback function, pass the function pointer as the value of this parameter.

The callback function must adhere to the function prototype described in LTSCRHELPCB structure.

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.

Returns

SUCCESS

The function was successful.

< 1

An error occurred. Refer to Return Codes.

Comments

This function will display the common dialog for setting the options for the L_CaptureSelectedObject function. The options selected by the user will be passed to the pObjectOptions parameter.

If a help callback function was provided in pfnCallback parameter, a Help button will appear on the dialog. If NULL was provided, the Help button will not appear.

Required DLLs and Libraries

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.

See Also

Functions:

L_CaptureSelectedObject, L_GetDefaultObjectOption, LTSCRHELPCB Function

Topics:

Screen Capture C API Function Groups: Capture Functions

 

Implementing Screen Capture

Example

L_INT CaptureObjectOptionDlgExample(L_VOID) 
{ 
   LEADCAPTUREOBJECTOPTION CaptureObjectOption; 
   HWND hWnd; 
   /* To call the L_CaptureObjectOptionDlg */ 
   hWnd = GetForegroundWindow(); 
   CaptureObjectOption.uStructSize = sizeof(LEADCAPTUREOBJECTOPTION); 
   /* use the defaults*/ 
   L_INT nRet = L_CaptureObjectOptionDlg(hWnd, 
   0, &CaptureObjectOption, TRUE, NULL, NULL); 
   return nRet; 
} 

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