![]() : FindWindow seems to work has it returns null when I "my windows" doesn't exist or isn't spelled like this. The code comes from this forum (written in French) : I tried using SetFocus too, and this time I get the error 5 (ERROR_ACCESS_DENIED). I'm worried it is a conversion error when saving the handle as a Java Pointer object and then converting back in JNA. I execute setWindowsPos just after retrieving the handle, without touching to the targeted windows. I don't understand why my handle is incorrect, as it comes from JNA. It doesn't work, and Native.getLastError() return 1400, which means Invalid Window Handle. Result : when I want to use that handle with if(windowsHandle != null) (windowsHandle, WindowsFinder.WINDOW_TOPMOST, 0, 0, 0, 0, 43) Pointer windowsHandle = (null, "my windows") JNA provides Java programs easy access to native shared libraries without writing anything but Java code - no JNI or native code is required. Pointer FindWindow(String lpClassName, String lpWindowName) īoolean SetWindowPos(Pointer hWnd, int hWndAfter, int x, int y, int cx, JNA (Java Native Access) provides Java programs easy access to native shared libraries (DLLs on Windows) without writing anything but Java code - no JNI or. WindowsFinder INSTANCE = (WindowsFinder) Native.load( Map DEFAULT_OPTIONS = Boolean.getBoolean("w32.ascii") ? ASCII_OPTIONS JNA Platform Automatic mapping from Java to native functions, with simple mappings for all primitive data types Runs on most platforms which support Java. Private static final long serialVersionUID = 1L Public static final int WINDOW_NONTOPMOST = -2 Public static final int WINDOW_TOPMOST = -1 I can correctly get a Windows Handle with FindWindows: public interface WindowsFinder extends StdCallLibrary There is one more aspect of encapsulation i.e access control. We are aware of the encapsulation property, that links data with code. Till now, we have discussed the basic units of Java programming. I'm using JNA to focus the application and Robot to simulate key pressing. The keywords that define the access scope is known as access specifier. I want to send key input to a third party application when a button is pressed.
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