winapi

问题 I'm designing a system that will write time series data to a file. The data is blocks of 8 bytes divided into two 4 bytes parts, time and payload. According to MSDN the WriteFile function is atomic ( http://msdn.microsoft.com/en-us/library/aa365747(VS.85).aspx ), if the data written is less than a sector in size. Since the file will only contain these blocks (there is no "structure" of the file so it's not possible to reconstruct a damaged file), added one after each other, it's vital that

问题 I'm designing a system that will write time series data to a file. The data is blocks of 8 bytes divided into two 4 bytes parts, time and payload. According to MSDN the WriteFile function is atomic ( http://msdn.microsoft.com/en-us/library/aa365747(VS.85).aspx ), if the data written is less than a sector in size. Since the file will only contain these blocks (there is no "structure" of the file so it's not possible to reconstruct a damaged file), added one after each other, it's vital that

问题 I'm designing a system that will write time series data to a file. The data is blocks of 8 bytes divided into two 4 bytes parts, time and payload. According to MSDN the WriteFile function is atomic ( http://msdn.microsoft.com/en-us/library/aa365747(VS.85).aspx ), if the data written is less than a sector in size. Since the file will only contain these blocks (there is no "structure" of the file so it's not possible to reconstruct a damaged file), added one after each other, it's vital that

问题 I'm converting some functions into a DLL which relate to Windows 7 functionality. I can't pass a TForm through DLL, so I need to pass its handle instead. except, once I have that handle on the other side, how do I reconstruct it back into a TForm instance? Also, what's the appropriate way to pass the handle (HWND) through a Delphi DLL to be compatible to call from C# for example? If not possible, then I at least need to know how to change the color of a window using windows API only, no

问题 I use this code to load embedded resource (bitmap image) HRSRC hResInfo = ::FindResource(hInstance, MAKEINTRESOURCE(resourceId), RT_BITMAP); HGLOBAL hRes = ::LoadResource(hInstance, hResInfo); LPVOID memRes = ::LockResource(hRes); DWORD sizeRes = ::SizeofResource(hInstance, hResInfo); It works fine. How I can to save it to the file C:\image.bmp ? This code creates only empty file: HANDLE hFile = ::CreateFile(L"C:\\image.bmp", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)

问题 I use this code to load embedded resource (bitmap image) HRSRC hResInfo = ::FindResource(hInstance, MAKEINTRESOURCE(resourceId), RT_BITMAP); HGLOBAL hRes = ::LoadResource(hInstance, hResInfo); LPVOID memRes = ::LockResource(hRes); DWORD sizeRes = ::SizeofResource(hInstance, hResInfo); It works fine. How I can to save it to the file C:\image.bmp ? This code creates only empty file: HANDLE hFile = ::CreateFile(L"C:\\image.bmp", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)

问题 I use this code to load embedded resource (bitmap image) HRSRC hResInfo = ::FindResource(hInstance, MAKEINTRESOURCE(resourceId), RT_BITMAP); HGLOBAL hRes = ::LoadResource(hInstance, hResInfo); LPVOID memRes = ::LockResource(hRes); DWORD sizeRes = ::SizeofResource(hInstance, hResInfo); It works fine. How I can to save it to the file C:\image.bmp ? This code creates only empty file: HANDLE hFile = ::CreateFile(L"C:\\image.bmp", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)

问题 I use this code to load embedded resource (bitmap image) HRSRC hResInfo = ::FindResource(hInstance, MAKEINTRESOURCE(resourceId), RT_BITMAP); HGLOBAL hRes = ::LoadResource(hInstance, hResInfo); LPVOID memRes = ::LockResource(hRes); DWORD sizeRes = ::SizeofResource(hInstance, hResInfo); It works fine. How I can to save it to the file C:\image.bmp ? This code creates only empty file: HANDLE hFile = ::CreateFile(L"C:\\image.bmp", GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL)

问题 I'm trying to set the background and foreground colors of the Windows command line console by using GetConsoleScreenBufferInfoEx and SetConsoleScreenBufferInfoEx . I'm doing it in Python, by using wintypes, and sofar it works. But there's something odd happening: the window shrinks a little at every call. This is how the calling code looks like: def GetConsoleScreenBufferInfoEx(handle): csbi = CONSOLE_SCREEN_BUFFER_INFOEX() # a structure csbi.cbSize = 96 # needs to be set success =

问题 I am writing a utility to start and stop windows services. The program will be distributed across many computers with differing levels of user privileges so I don't want to use the command line. I've tried using JNA, import com.sun.jna.platform.win32.W32Service; import com.sun.jna.platform.win32.W32ServiceManager; import com.sun.jna.platform.win32.Winsvc; /** * * @author */ public class WindowsServices { /** * @param args the command line arguments */ public static void main(String[] args) {