Hi, You must change attributes of this memory page. use this code. DWORD VirtualQuery( LPCVOID lpAddress, PMEMORY_BASIC_INFORMATION lpBuffer, SIZE_T dwLength); this function fills MEMORY_BASIC_INFORMATION structure & then call BOOL VirtualProtect( LPVOID lpAddress, SIZE_T dwSize, DWORD flNewProtect, // PAGE_READONLY PDWORD lpflOldProtect ); Zqr

I can use GDI32::GdiDrawStream, are you interesting how i can that? Zqr