L_ILM_HITTEST
Send this message to query the ImageList Control for the index of the item at the specified location.
Parameter |
Description |
wParam |
Ignored, use 0. |
lParam |
Pointer to a POINT structure containing the location to query. |
Returns
>=0 |
The index of the item at the specified location |
< 0 |
An error occurred, refer to Return Codes. |
Comments
This message will return the 0 based index of the item at the specified location, if one exists.
The location is in MM_TEXT mapping mode (pixels), and is relative to the client area of the control's window.
The associated macro is:
L_ImgListHitTest(hWnd, pPoint)
For a complete list of available macros, refer to the Ltlst.h file.
See Also
Elements: |
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Topics: |
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Example
L_INT ILM_HITTESTExample(HWND hCtrl) { if(IsWindow(hCtrl)) { LRESULT lRet; L_TCHAR szText[200]; POINT pt; /* check a location for an item */ pt.x = 80; pt.y = 100; lRet = SendMessage(hCtrl, L_ILM_HITTEST, 0, (LPARAM)&pt); if(lRet >= 0) { wsprintf(szText, TEXT("Item: %ld"), lRet); MessageBox(hCtrl, szText, TEXT("HitTest"), MB_OK); } else MessageBox(hCtrl, TEXT("None"), TEXT("HitTest"), MB_OK); return SUCCESS; } else return ERROR_INVALID_PARAMETER; }