The ImmSetCompositionWindow function sets the position of the composition window.
BOOL ImmSetCompositionWindow(
| HIMC hIMC, | |
| LPCOMPOSITIONFORM lpCompForm | |
| ); | 
If the function succeeds, the return value is a nonzero value.
If the function fails, the return value is zero.
The ImmSetCompositionWindow function causes a IMN_SETSCOMPOSITIONWINDOW message to be sent to the application.