function Imm32GetCompositionString(hImc: HIMC; dWord1: DWORD; lpBuf: pointer; dwBufLen: DWORD): Longint;
Longint Imm32GetCompositionString(HIMC hImc, DWORD dWord1, void * lpBuf, DWORD dwBufLen);
Controls
This is function Controls.Imm32GetCompositionString.