BeginInvoke on the UI thread, but of course not. ---- This is a comment from "The true meanings of Invoke and BeginInvoke.The BeginInvoke principle is to convert the called method into a message, and then call RegisterWindowMessage () in Win32 API to send a message to the UI window. ---- This is a comment from "The true meanings of Invoke and BeginInvoke.
(2) We Use Thread to call BeginInvoke and InvokeWe open a thread to let the thread execute some time-consuming operations, and then return to
. Invoke (New invokedelegate (invokemethod ));
// D code segment ......
}
Private void invokemethod (){
// Ecode segment
}
Private void butinvoke_click (Object sender, eventargs e ){
// A code snippet .......
Invokethread = new thread (New threadstart (startmethod ));
Invokethread. Start ();
// B code segment ......
}
What do you think is the code execution sequence? Remember that the invoke and begininvoke of control are execu
open a thread to let the thread execute some time-consuming operations, and then return to the user UI thread with control. invoke and control. begininvoke to execute interface updates.
Code (3) thread calls the control invokePrivate thread invokethread;Private delegate void invokedelegate ();Private void startmethod (){// C code segment ......Control. Invoke (New invokedelegate (invokemethod ));// D code segment ......}Private void invokemethod (){// Ecod
: "Utf-8"2. String all in Englishs1= "ABC"--Type (S1): StrS2 = u "abc"--Type (s2): UnicodeMeaning of U "": Indicates that the following string is stored in Unicode formatS1.encode ("UTF8") successS2.encode ("UTF8") success3. When Chinese is present:S1 = "Hello"--GB2312 encoded. Windows underS2 = u "Hello"S1.encode ("UTF8") errorS2.encode ("UTF8") success Cause of Error:is encoded in memory in Unicode, butS1 is not Unicode encoded (because of wasted storage) when it passes over, andEncode is enco
Because real data processing is done by Documentparser::appendbytes and Documentparser::finish follow-up calls, so let's focus on these two piecesData reception and decodingTextresourcedecoderTextresourcedecoder::d Ecode ()An important action in this function is to dump the received string into Textresourcedecoder:: M_buffer.Here first called the Textresourcedecoder::checkforheadcharset, the function is to check the HTML header information is encoded
This article describes how Python receives Gmail's new mail and sends it to gtalk. Share to everyone for your reference. The implementation method is as follows:
#!/usr/bin/env python #-*-coding:utf-8-*-import imaplib Import string, random import Stringio, rfc822 import email F Rom GOOGLE.APPENGINE.API import xmpp SERVER1 = "imap.gmail.com" USER = "Yeah" PASSWORD = "Ohmyga" # Connect to Server Serv ER = imaplib (SERVER1, 993) # login Server.login (USER, PASSWORD) server.select () # list it
, 1) # Reuse address Port Sock_server.bind ((' 127.0.0.1 ', 8088)) Sock_server.listen (1) # Start listening, 1 stands for a connection in the Allow queue, More new connections will be rejected when the print (' starting ... ') while true:conn, client_addr = Sock_server.accept () # is blocked until a connection is made, and a new connection comes in. To survive as a Connection object print (client_addr) while True:try:data = CONN.RECV (1024) # receive 1024 bytes if not Data:break # for Linux ope
This article mainly introduces PHP to determine whether the JSON format method, the need for friends can refer to theThe first thing to remember is that Json_encode returns a string, and Json_decode returns an object-judging data that is not in JSON format: The code is: function Is_not_json ($str) {return Is_null (Json_d Ecode ($STR)); To determine that the data is valid JSON data: (PHP version is greater than 5.3) the code is as follows: function Is_
C.dlv_bureau_org_code = D.zj_code
and C.dlv_sts_code = ' I ' and
d.jgfl = ' yz '
and (a.deal_date, a.deal_time) =
(select Max (t.deal_date), Max ( T.deal_time) from
Tb_evt_bag_mail_rela t
where t.mail_num = A.mail_num and
t.bag_actn_code = ' 3 '
Group by T.mail_num, T.bag_actn_code) 3. Time limit distribution with the detail statement. The time distribution is simpler. Statements such as the following: Select D.city, D.ssxs, D.zj_code,
[131]
When we execute this regular expression, everything looks smooth, because the path we need to execute is:
0000 5d001b 93 BRA [27]0003 66 102 BRAZERO 0004 5e000b0001 94 CBRA [11, 1]0009 1bc290 27 CHAR ['\xc2\x90']
So now we can happily insert any regular expression bytecode into our CBRA and KET in the adjusted heap buffer.
The PCRE bytecode interpreter is surprisingly robust, so it took me a long time to find
Functions in Oracle (1)-The Decode ecode () function is one of the powerful functions of oracle pl/SQL. Currently, only oracle SQL provides this function, this function is not available for SQL implementations of other database vendors. The DECODE function is one of the powerful functions of oracle pl/SQL. Currently, only oracle SQL provides this function, and other database vendors do not yet implement this function. What is the purpose of DECODE? Fi
program hardcoded the machine code into the program.Although I know it is written in easy language, I still need to use PEID to check whether there is a shell. Microsoft Visual C ++ 6.0, no shell. (Lucky for the first time)Let's look at the Section. No. ecode is found. It is written in easy language of the new version (this is what I learned when I checked it online. It's OUT !).Search online for a while and find out the approximate solution.If the h
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