C # How to pin the form to the desktop, set the base, and embed the Desktop,

C # How to pin the form to the desktop, set the base, and embed the Desktop,

To create a desktop clock, dingtalk does not affect normal use on the desktop. It is only displayed when you are watching the desktop.

Find this code from multiple sources on the Internet, but it is still inconvenient. Let's discuss it.

This program can also be displayed when "show desktop" is used. Change Form1.cs of the program:

 

[Csharp]View plaincopy

1. Using System;
2. Using System. Collections. Generic;
3. Using System. ComponentModel;
4. Using System. Data;
5. Using System. Drawing;
6. Using System. Text;
7. Using System. Windows. Forms;
8. Using System. Runtime. InteropServices;
10. Namespace cbgfinder
11. {
12. Public partial class Form1: Form
13. {
14. [DllImport ("user32.dll", CharSet = CharSet. Auto)]
15. Public static extern IntPtr FindWindow ([exploralas (UnmanagedType. LPTStr)] string lpClassName, [exploralas (UnmanagedType. LPTStr)] string lpWindowName );
17. [DllImport ("user32")]
18. Private static extern IntPtr find1_wex (IntPtr hWnd1, IntPtr hWnd2, string lpsz1, string lpsz2 );
20. [DllImport ("user32.dll")]
21. Public static extern IntPtr SetParent (IntPtr hWndChild, IntPtr hWndNewParent );
23. Public Form1 ()
24. {
25. InitializeComponent ();
26. }
28. Private void Form1_Load (object sender, EventArgs e)
29. {
30. IntPtr pWnd = FindWindow ("Progman", null );
31. PWnd = find1_wex (pWnd, IntPtr. Zero, "SHELLDLL_DefVIew", null );
32. PWnd = find1_wex (pWnd, IntPtr. Zero, "SysListView32", null );
33. // IntPtr tWnd = new System. Windows. Interop. WindowInteropHelper (this). Handle;
35. SetParent (this. Handle, pWnd );
36. }
37. }
38. }

 

 

The code is: The http://download.csdn.net/detail/icyfox_bupt/4382848 has no resource points

The problem with this program is that if I want to write:

 

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1. This. FormBorderStyle = None

Is to set the borderless program, it can not be pinned to the desktop, it becomes a normal program

 

Let's discuss it together.

In C language-> what?

-> Is a whole. It is used to point to a struct, class in C ++, and other pointers containing sub-data to obtain sub-data. In other words, if we define a struct in C and declare a pointer pointing to this struct, we need to use "->" to retrieve the data in the struct using the pointer ".
For example:
Struct Data
{
Int a, B, c;
};/* Define struct */
Struct Data * p;/* define struct pointer */
Struct Data A = {1, 2, 3};/* declare variable */
Int x;/* declare a variable x */
P = & A;/* point p to */
X = p-> a;/* indicates that the data item a in the struct pointed to by p is assigned to x */
/* Because p points to A, p-> a = A. a, that is, 1 */

For the first problem, p = p-> next; this should appear in the linked list of C language. next here should be a struct pointer of the same type as p, and its definition format should be:
Struct Data
{
Int;
Struct Data * next;
};/* Define struct */
............
Main ()
{
Struct Data * p;/* declare the pointer Variable p */
......
P = p-> next;/* assign the value in next to p */
}
The linked list pointer is a difficulty in C language, but it is also the key. It is very useful to learn it. To be careful, you must first talk about variables and pointers.
What is a variable? The so-called variables should not be simply thought that the amount will become a variable. Let's use the question of our Dean: "Is the classroom changing ?" Change, because there are different people in the classroom every day, but they do not change, because the classroom is always there, and it does not become larger or smaller. This is the variable: There is a constant address and a variable storage space. Under normal circumstances, we only see the variable in the room, that is, its content, but do not pay attention to the variable address, but the C language pointer is the address of the room. We declare that variables are equivalent to building a house to store things. We can directly watch things in the house, while declaring pointers is equivalent to getting a positioner. When a pointer points to a variable, it is to use the pointer to locate the variable. Then we can use the pointer to find the variable "tracked" and get the content in it.
What about struct? The structure is equivalent to a villa composed of several houses, and several houses are bound for use together. Suppose there are many such villas distributed in a big maze, and each villa has a house. The location information of another villa is put in it. Now you have found the first villa with the positioner and obtained what you want from it (the data part of the linked list ), then, calculate the location of the next villa into your positioner (p = p-> next), and go down to the next villa ...... If you go on like this, you will know that the information of a villa on the ground is gone (p-> next = NULL), and your trip is over. This is the process of traversing a linked list. Now you can understand the meaning of p = p-> next!
Write so much. I hope you can understand.
If you want to learn c and C ++ well, you must be familiar with linked lists and pointers!

In C language-> what?

-> Is a whole. It is used to point to a struct, class in C ++, and other pointers containing sub-data to obtain sub-data. In other words, if we define a struct in C and declare a pointer pointing to this struct, we need to use "->" to retrieve the data in the struct using the pointer ".
For example:
Struct Data
{
Int a, B, c;
};/* Define struct */
Struct Data * p;/* define struct pointer */
Struct Data A = {1, 2, 3};/* declare variable */
Int x;/* declare a variable x */
P = & A;/* point p to */
X = p-> a;/* indicates that the data item a in the struct pointed to by p is assigned to x */
/* Because p points to A, p-> a = A. a, that is, 1 */

For the first problem, p = p-> next; this should appear in the linked list of C language. next here should be a struct pointer of the same type as p, and its definition format should be:
Struct Data
{
Int;
Struct Data * next;
};/* Define struct */
............
Main ()
{
Struct Data * p;/* declare the pointer Variable p */
......
P = p-> next;/* assign the value in next to p */
}
The linked list pointer is a difficulty in C language, but it is also the key. It is very useful to learn it. To be careful, you must first talk about variables and pointers.
What is a variable? The so-called variables should not be simply thought that the amount will become a variable. Let's use the question of our Dean: "Is the classroom changing ?" Change, because there are different people in the classroom every day, but they do not change, because the classroom is always there, and it does not become larger or smaller. This is the variable: There is a constant address and a variable storage space. Under normal circumstances, we only see the variable in the room, that is, its content, but do not pay attention to the variable address, but the C language pointer is the address of the room. We declare that variables are equivalent to building a house to store things. We can directly watch things in the house, while declaring pointers is equivalent to getting a positioner. When a pointer points to a variable, it is to use the pointer to locate the variable. Then we can use the pointer to find the variable "tracked" and get the content in it.
What about struct? The structure is equivalent to a villa composed of several houses, and several houses are bound for use together. Suppose there are many such villas distributed in a big maze, and each villa has a house. The location information of another villa is put in it. Now you have found the first villa with the positioner and obtained what you want from it (the data part of the linked list ), then, calculate the location of the next villa into your positioner (p = p-> next), and go down to the next villa ...... If you go on like this, you will know that the information of a villa on the ground is gone (p-> next = NULL), and your trip is over. This is the process of traversing a linked list. Now you can understand the meaning of p = p-> next!
Write so much. I hope you can understand.
If you want to learn c and C ++ well, you must be familiar with linked lists and pointers!