Recently I am working on a QT project, which requires identifying keyboard input keys to generate shortcut keys. There is a class QKeySequenceEdit in QT. Using this, you can directly obtain keyboard input. However, if you want to filter out the keys you do not want to recognize, you must rewrite it. ThekeyPressEvent(QKeyEvent *e) function. […]
Tag: letters
Andy’s First Dictionary Skip non-letters, convert to lowercase, sort
Complete code #include <iostream> #include <set> #include <algorithm> #include <sstream> #include <cctype> // For tolower() function using namespace std; int main() { //On the Windows platform, the general input to simulate eof is to enter ctrl + z at the beginning of a new line. //In a Unix environment, just enter ctrl + D at […]
Construct a webshell that does not contain letters and numbers
Article directory Bypass without letters and numbers Knowledge introduction topic Method 1: XOR operation bypass Method 2: Invert to bypass Filtering is not very strict Advanced bypass Use php7 features to directly bypass Bypass by not containing letters and numbers Knowledge introduction <?php echo “A”^”`”; ?> The result from the operation is! We can see […]
Construct a webshell that does not contain letters and numbers
Directory Bypass without letters and numbers XOR to bypass ?Edit negation to bypass Use php syntax to bypass Bypass with no letters and numbers basic code <?php echo “A”^”`”; ?> The result is ! We can see that the output result is the character “!”. The reason why such a result is obtained is that […]
webshell without letters and numbers
Directory 1. XOR 1. Pre-knowledge of XOR 2. Advanced XOR 3. XOR to build a one-sentence Trojan horse 4. Use XOR to bypass regularity: Supplementary knowledge: when the underline is filtered Two, negate 1. Invert the function name to bypass the regular rule 2. Characters are reversed and spliced to write webshell 3. Self-increment 1. […]
How to construct a webshell that does not contain letters and numbers
Bypass without letters and numbers 1. XOR bypass 2. Negate to bypass 3. Use php syntax to bypass Bypass with no letters and numbers Understanding of basic code operation ideas The running result is! We can see that the result of the output is the character “!”. The reason why such a result is obtained […]
P1629 Postman delivering letters (shortest route) (cover included)
The postman delivers the letter Description of topic There is a postman to deliver something, the post office is at the node 1 1 1. He will send a total of no ? 1 n-1 n?1 things whose destinations are nodes 2 2 2 to node no no n. Due to the heavy traffic in […]
Use clip-path to draw GIFs into dancing letters
Preface I have seen an interesting CSS effect before, and today we will implement it again, drawing the animated GIF into jumping letters through clip-path. The effect is as follows: GIFs can be found at random, eh? This is not the point, the point is the implementation process below, don’t be attracted by GIF. If […]
Linux two threads print out letters, using mutexes and condition variables
Two threads print letters Suppose you create two sub-threads, the first sub-thread outputs all uppercase letters (A-Z), the second sub-thread outputs all lowercase letters (a-z), and sleeps (usleep) for 100ms each time a letter is output. code show as below: #include <stdio.h> #include <unistd.h> #include <pthread.h> #include <stdlib.h> void *fun1(void * arg) { for(int i=0;i<26;i […]
Display numbers and letters on tft screen based on fpga
Introduction Development platform: ZYNQ Development tools: Vivado 2018.3 tft screen resolution: 800*480 Use pure verilog to implement the bitmap module on the PL side. Based on this module, the numbers 0-9 and FPGA letters can be displayed on the tft screen Bitmap module This module is a 5*5 bitmap, pure combinational logic, based on case […]