Available in LEADTOOLS Imaging Pro, Vector, Document, and Medical Imaging toolkits. |
Send this message to get the ImageList Control's view size.
Parameter |
Description |
wParam |
Ignored. Use 0. |
lParam |
Ignored. Use 0. |
Returns
>= 0 |
The number of rows/columns that are "visible". |
< 0 |
An error occurred. Refer to Return Codes. |
Comments
This message returns the size of the ImageList control's viewing area in rows or columns. The size includes partially visible rows/columns.
The value returned depends on the current scroll style . If the scroll style is SCROLLSTYLE_VERTICAL, then the value returned indicates rows. If the scroll style is SCROLLSTYLE_HORIZONTAL, then the value returned indicates columns.
The associated macro is
L_ImgListGetViewSize(hWnd)
For a complete list of available macros, refer to the Ltlst.h file.
See Also
Elements: |
L_ILM_GETSCROLLSTYLE, L_ILM_SETSCROLLSTYLE, L_ILM_GETFIRSTVISIBLE |
Topics: |
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Example
L_INT ILM_GETVIEWSIZEExample(HWND hCtrl) { if(IsWindow(hCtrl)) { L_INT32 nSize; L_INT32 nFirst; L_INT32 nLast; L_INT32 nCols; L_INT32 nCount; //NOTE: assume scroll style = SCROLLSTYLE_VERTICAL //get the view size nSize = (L_INT32)SendMessage(hCtrl, L_ILM_GETVIEWSIZE, 0, 0); //get the first visible item nFirst = (L_INT32)SendMessage(hCtrl, L_ILM_GETFIRSTVISIBLE, 0, 0); //get the column count nCols = (L_INT32)SendMessage(hCtrl, L_ILM_GETCOLCOUNT, 0, 0); //calculate the index of last visible item nLast = nFirst + (nSize*nCols) - 1;//0 based index nCount = (L_INT32)SendMessage(hCtrl, L_ILM_GETITEMCOUNT, 0, 0); if(nLast > nCount-1) nLast = nCount-1; return SUCCESS; } else return ERROR_INVALID_PARAMETER; }