-- Hooks are an important part of the message processing mechanism in windows. By installing various hooks and applications
Program You can set corresponding child routines to monitor the message passing in the system and process the messages before they reach the target window program. There are many types of hooks. Each Hook can intercept and process corresponding messages. For example, a keyboard Hook c
The concept of "hook" is not really familiar with, recently saw a PHP framework used in this mechanism to extend the project, so probably to understand the next.The basic idea of hook plug-in mechanism:In the project code, you think that you want to extend (temporarily not extend) place a hook function, and so on need to extend the time, the need to implement the
Although there are not many hook functions, their parameters are complex. You should start with the parameters before proceeding.
Unhookwindowshookex only needs the hook handle returned by setwindowshookex as the parameter, which is simple;
Let's take a look at the setwindowshookex statement:
Setwindowshookex (idhook: integer; {hook type} lpfn: tfnhookpro
Hook has very few contacts, so he never dared to talk about anything. This MessageBox has really studied several hour, so I am afraid of being laughed at by the experts. Today, I am not ashamed of myself, let me talk about some of my views. You are welcome to throw bricks and tomatoes.
As we all know, a standard MessageBox box is usually not a custom style, because we can never find its handle. the API function MessageBox can be returned only when the
There are many forms of hook. Here we analyze the inline HOOK API
This type of hook only targets the process to be hooked, and does not affect other processes.
For example, a process uses the MessageBox API,
Program If you want to change the behavior of the original MessageBox function, you can perform this hook.
Just a HookTime limit:2000MS Memory Limit:32768KB 64bit IO Format:%i64d %i64 U SubmitStatusPracticeHDU 1698DescriptionIn the game of DotA, Pudge's Meat hook is actually the most horrible thing for most of the heroes. The hook is made to several consecutive metallic sticks which is of the same length.
Now Pudge wants to do some operations on the hook.Let us number the consecutive metallic sticks of
,header parsing,access control,authentication,authorization, MIME Type Checking,fixup,response,logging,cleanupApache Hook mechanismApache hook mechanism refers to: Apache allows the module (including internal modules and external modules, such as mod_php5.so,mod_perl.so, etc.) to inject the custom function into the request processing loop. In other words, the module can join the Apache request processing pr
What's the hook?
Programming under Windows systems, message messages are passed through all the times. This message can be easily understood as a meaningful integer, as we have seen in the old feature of the "Yangtze River, I am the Yellow River" a meaning. Messages defined in Windows give beginners the impression that they seem to be "countless", a common part of the message is defined in the Winuser.h header file. Hooks have a very close connection
Hook Introduction: Hook is the hook, in Android, is to intercept and monitor the transmission of the event before the event is delivered to the end, like a hook on an event, and be able to handle some of their own specific events when the event is ticked. Cydia Substrate's official website defines: The powerful code m
Next, let's talk about the hook instance for an example.
This example sets a global hook to capture otherProgram.
First, build the DLL to map to other programs. The DLL file name is keyhook. h/keyhook. cpp.
In keyhook. H, two functions are exported, namely the function for setting and canceling the hook. // ------------------------------------ Keyhook. h --
These are mature things. I have looked at them over the past few days and summarized them.This article discusses several methods of hook Functions in Windows. Provides a complete example of hook TextOutA. The CreateRemoteThread method is used to inject the hook dll into a common application. Hooking Imported Functions by name callSteps/implementation for imported
Reprinted please indicate the source: http://blog.csdn.net/u012860063
Question link: http://acm.hdu.edu.cn/showproblem.php? PID = 1, 1698
Problem descriptionin the game of Dota, Pudge's meat hook is actually the most horrible thing for most of the heroes. the hook is made up of several consecutive metallic sticks which are of the same length.
Now Pudge wants to do some operations on the
New to Windows Kernel 1-hook ssdt
This series of records learn how to learn the Windows kernel.
Core content of this article: hook the series ntopenprocess, ntduplicateobject, ntcreatethread, ntopenthread, and ntwritevirtualmemory in ssdt to filter process operations to protect the target process space.
The full name of ssdt is system services Descriptor Table, a system service Descriptor Table. This table
When using Java, you often encounter Resource Initialization or generating temporary files when the program starts. When the program exits, you need to clear these temporary files, or execute other necessary operations when the program exits. If the program Exits normally through the close/exit button provided by us, everything is fine, but if the user closes the window for running the virtual machine directly, everything will become more complicated.Fortunately, Java provides an elegant way to
How to force users to fill in log information when submitting SVN?
If you are using the tortoisesvn client, you can add the "tsvn: logminsize" attribute to the folder. When you use tsvn to submit changes in this folder, if the length of the log information is insufficient, the submit OK button will remain unavailable. However, this method is ineffective for non-tsvn clients.
As a more restrictive restriction, You can forcibly enter the log information on the Subversion server. In this case, you
Including system hooks, thread hooks, global hooks, and private hooks. A separate DLL is required for system hooks, which may lead to a long delay and may not be used as a separate DLL on the Internet.
Now I am posting Code. The Code is referenced in an article in The Red/Black alliance.
Copy codeThe Code is as follows: public class SetHook
{
Public class HookTypes
{
/// /// Hook type
/// Public enum HookType
{
WH_JOURNALRECORD = 0, // records the inp
Hook mechanism is the hook mechanism, which is implemented by table-driven, commonly used to deal with a variety of special cases. We have predefined hooks to fit some special events in the usual code logic, which allows us to have a lot less if else statements.Give an example of a college entrance examination, such as won the National first prize plus 20 points, second prize plus 10 points, third prize plu
First, Hook simple introductionto facilitate administrator control over the submission process, Subversion provides a hook mechanism. When a particular event occurs, the corresponding hook is called, and the hook is actually the equivalent of a particular event's handler function. Each
Let's talk about how the global hook came into our program. If a program A has a wh_getmessage global hook installed, and the hook function is in B.dll, then when the other program takes a message from its own message queue, the system Discovery program a installs the Wh_getmessage global hook, Checks whether the proce
Hook
1: What is a hook literally, a hook is intended to hook something, in the Program , you can use hooks to Process Windows messages in advance. example: one form , form contains textbox , when you enter textbox , textbox always displays " A ", then we can use the
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