Font font = label.getFont();
label.setFont(font.deriveFont(12f) );
label.setFont(font.deriveFont(font.getStyle() ^ Font.BOLD) );
2009年9月24日 星期四
UI alignment
TOP_ALIGNMENT, CENTER_ALIGNMENT, BOTTOM_ALIGNMENT,
LEFT_ALIGNMENT, RIGHT_ALIGNMENT
ex:
eclise problem in snow leopard when running java 1.6
error:
"java.lang.NoClassDefFoundError: apple/laf/CoreUIControl"
solution:
add /System/Library/Frameworks/JavaVM.framework/Versions/A/Frameworks/JavaRuntimeSupport.framework/Versions/A/Resources/Java/JavaRuntimeSupport.jar
to classpath of run configuration
2009年9月23日 星期三
java jtree
1. simple jtree example
public class SimpleTree extends JFrame {
public static void main(String[] args) {
new SimpleTree();
}
public SimpleTree() {
super("Creating a Simple JTree");
DefaultMutableTreeNode root = new DefaultMutableTreeNode("Root");
DefaultMutableTreeNode child1 = new DefaultMutableTreeNode("Child 1");
root.add(child1);
DefaultMutableTreeNode child2 = new DefaultMutableTreeNode("Child 2");
root.add(child2);
JTree tree = new JTree(root);
getContentPane().add(new JScrollPane(tree));
setSize(275, 300);
setVisible(true);
}
}
install mac os from dmg file
need 2 partitions, one for installer, one will be where you install os
1. open disk utility2. click restore tab
3. drag dmg file in source field
4. drag the partition for installer in destination field
5. click erase destination
6. click restore
7. open system preference --> startup disk --> installer partiton
8. restart to install os
2009年9月22日 星期二
call javascript function from html
test.html
<script src="test.js"></script>
<script language="JavaScript">
test();
</script>
test.js
function test() {
alert("test");
}
regular expression
+: {1, }
*: {0, }
?: { 0, 1}
^: beginning of input
$: end of input
\w: any alphanumerical character including _
\W: any non-word character
\d: any digit
\D: any non-digit
\s: any whitespace
\S: anything but whitespace
2009年9月21日 星期一
Interface Definition Language (IDL)
Interface definition language (IDL) files are a structured way to define interfaces and objects.
ex:
[
object,
uuid(),
helpstring("IWDFObject Interface"),
local,
restricted,
pointer_default(unique)
]
interface IWDFObject : IUnknown
{
HRESULT
DeleteWdfObject(
void
);
HRESULT
AssignContext(
[in, unique, annotation("__in_opt")] IObjectCleanup * pCleanupCallback,
[in, unique, annotation("__in_opt")] void * pContext
);
HRESULT
RetrieveContext(
[out, annotation("__out")] void ** ppvContext
);
void
AcquireLock(
void
);
void
ReleaseLock(
void
);
};
Active Template Library (ATL)
a set of template-based C++ classes that are often used to simplify the creation of COM objects
HRESULT & com
a 32-bit type
three field:
(1) severity bit:
indicate success or error
(2) facility
(3) return code
success codes are assigned names that begin with S, such as S_OK
failure codes are assigned names that begin with E
use FAILED(hr) or SUCCEEDED(hr) to check success or failure
GUID & com
Globally unique identifiers (GUIDs)
1.Interface ID (IID)
a GUID that uniquely identifies a particular COM interface
2.Class ID (CLSID)
a GUID that uniquely identifies a particular COM object
com & interface
An interface is the COM mechanism for exposing public methods on an object
If an object exposes a standard interface, the object must implement every method in that interface.
A typical COM object exposes at least two and sometimes many interfaces.
IUnknown
IUnknown is the key COM interface. Every COM object must expose this interface
package windows driver
WDF driver package consists of the following components
1. driver binaries
2. either or both WDF co-installer
3. INF
a text file that contains directives that instruct Windows how to install the driver
use .inx file to create .inf files for different architecture
2009年9月20日 星期日
compile windows project
1. open a build environment window
start -> all programs -> windows driver kits -> wdk 7600.16385.0 -> build environments -> windows 7 -> x64 free build environment
2. In the project directory, two supporting files are needed
1. Makefile
2. sources
This file contains project-specific information that is used to build the driver, such as the list of source files.
options files:
Makefile.inc:
the directives for building the custom targets are placed in Makefile.inc. Makefile itself should never be modified.
.inx file:
An INX file is an architecture-independent INF file. When the appropriate instructions are specified, the Build utility uses the data in an INX file to produce an appropriate INF file for the project.
3. compile driver
in the project directory, type "build -g"
-g:Uses colored text to display warnings, errors, and summaries.
usually use "build -ceZ"
4. the file created from building
a output directory :
ex: objfre_wxp_x86\i386 for windows xp
objfre_wnet_x86\i386 for windows 2003
files in the directory:
(1) driver binary:
for KMDF, it is .sys file
for UMDF, it is .dll file
(2) object files for source file
(3)symbol file
.pdf file, for debugging
check out project(not created from xcode) from cvs in xcode
1. check out project Test
2. create new project Test
command line utility --> standard tool
this will add Test.xcodeproj in the Test directory
3. add all files in Test directory to Source of Test project
4. set project's SCM repository as CVS path
call java from native program
1. create Java VM
JavaVM *jvm = NULL;
JNIEnv *env = NULL;
JavaVMInitArgs vm_args;
JavaVMOption options[2];
args.nOptions = 2;
args.version = JNI_VERSION_1_6;
options[0].optionString = "-Xmx512m";
options[1].optionString ="-Djava.class.path=test.jar:test2.jar";
args.options = options;
#ifdef FOR_MAC_OS
setenv("JAVA_JVM_VERSION", "1.6",1);
#endif
JNI_CreateJavaVM(&jvm, (void **)&env, &args);
(2) get class & method of class
jclass aClass = (*env)->FindClass(env, "Test");
jmethodID aid = (*env)->GetStaticMethodID(env, aClass,"main","([Ljava/lang/String;)V");
(3) call method of class
jobjectArray applicationArgs;
jstring applicationArg0;
applicationArgs = (*env)->NewObjectArray(env, 1, (*env)->FindClass(env, "java/lang/String"), NULL);
applicationArg0 = (*env)->NewStringUTF(env, "Test");
(*env)->SetObjectArrayElement(env, applicationArgs, 0, applicationArg0);
(*env)->CallStaticVoidMethod(env, aClass, aid, applicationArgs);
pthread example
void *Test(void *threadid)
{
long tid;
tid = (long)threadid;
printf("Hello World! It's me, thread #%ld!\n", tid);
pthread_exit(NULL);
}
int main (int argc, char *argv[])
{
pthread_t myThread;
int rc;
long t;
printf("In main: creating thread %ld\n", t);
rc = pthread_create(&myThread, NULL, Test, (void *)t);
if (rc){
printf("ERROR; return code from pthread_create() is %d\n", rc);
exit(-1);
}
pthread_exit(NULL);
}
2009年9月18日 星期五
2009年9月17日 星期四
set working directory
1. for cocoa
[[NSFileManager defaultManager] changeCurrentDirectoryPath:@"/test"];2. linux api ( also for mac)
chdir("/test");
let java menu bar replace app menu bar
method 1:
-Dcom.apple.macos.useScreenMenuBar="true"
method 2:
System.setProperty("com.apple.macos.useScreenMenuBar","true");
2009年9月16日 星期三
compile jni program on xcode
1. set header search path for app target from build panel:
/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Headers
2. add JavaVM.framework
2009年9月15日 星期二
show file is 64 bit or 32 bits
ex:
file test.0
--> test.o: Mach-O universal binary with 2 architectures
test.o (for architecture x86_64): Mach-O 64-bit executable x86_64
test.o (for architecture i386): Mach-O executable i386
compile JNI program on mac
gcc -o launch.o -I/System/Library/Frameworks/JavaVM.framework/Versions/1.6.0/Headers -framework JavaVM launch.c -m64
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