The height is fixed, always...Code:case WM_CREATE: { HWND ComboBox; ComboBox = CreateWindow("COMBOBOX","",WS_CHILD|WS_VISIBLE|CBS_DROPDOWN,10,10,160,17,hwnd,(HMENU)ID_COMBOBOX,GetModuleHandle(NULL),NULL); SendMessage(ComboBox,CB_ADDSTRING,0,(LPARAM)(LPCTSTR)"Teste1"); SendMessage(ComboBox,CB_ADDSTRING,0,(LPARAM)(LPCTSTR)"Teste2"); SendMessage(ComboBox,CB_ADDSTRING,0,(LPARAM)(LPCTSTR)"Teste3"); SendMessage(ComboBox,CB_ADDSTRING,0,(LPARAM)(LPCTSTR)"Teste4"); WPARAM Font = (WPARAM)GetStockObject(DEFAULT_GUI_FONT); SendMessage(ComboBox,WM_SETFONT,Font,MAKELPARAM(FALSE,0)); }break;