Inspiration for upgrading launched projects

Currently, a project developed by the company is a very mature and stable project, which has been used by dealers nationwide for several years, therefore, the primary consideration for each upgrade of the new version is to release new features and

Dataview does not use new for initialization.

Recently, it is found that when the order browsing screen is opened, the system will throw an error message indicating that there is no data in the 0 rows. It is a search condition problem in the beginning, In addition, the number of times of

Configure database permissions for developers and standardize the Database Upgrade process

During the release of the new version of the project, some database permission management problems and Database Upgrade process specifications were exposed. After the release of the real version, we found that some scripts were not executed,

Volume range of directx93d game programming entry [translation]

Bounding volumes-volume range Sometimes we want to calculate the volume range of the mesh. Two general examples of using the volume range are sphere andCubeBody. Other methods include cylinder, elliptical body, diamond body, and capsules. Figure 11

Thoughts on the disaster caused by an SQL script

This afternoon, my colleague updated a script on the PRD database server. Unexpectedly, a very common operation resulted in disastrous consequences, since our system recently changed the way of interacting with SAP, we used to access sap through

Sine function gdiplus

Float rota = 0.0f;Float zrta = 1.0f; Int C1 = 100;Int c2= 200;Int TMP = 0;Int step =-200; Int render (){ If (Step> 800 ){Step =-200;Invalidaterect (hwnd, & rect, true );} Graphics graphics (HDC );Graphicspath path; Pen (color (255, 0, 255, 0),

Network ing settings for internal systems of the company

Some time ago, the user suddenly found that our system login was much slower, and we did not pay attention to it at the beginning, because the slow system login may be caused by the user's Network And there are no exceptions in other aspects. After

Design of abnormal Monitoring System

During the recent period, data center adjustments, hardware updates, network transformation, and other work have been constantly implemented, causing many problems, such as unstable servers and frequent network faults. As a result, system problems

Only when the column list is used and identity_insert is on can an explicit value be specified for the ID column in The 't_articlefiles 'table.

When importing table data from another database to a database today, the system suddenly prompts "only when the column list is used and the identity_insert is on, you can specify an explicit value for the ID column in the table 't_ articlefiles." At

Datagridview with checkbox column header

During project development, it is common to use checkbox as the first column in The datagridview dview. Use the datagridviewcheckboxcell in the datagridview dview, however, the datagridview datagriprovided by Microsoft does not support Selecting All

The problem of locking when writing logs in multi-thread programs

When I was working on a project some time ago, the system was a multi-threaded program, and several threads needed to write logs. The main thread and communication thread often fought during log writing. To solve this problem, consider locking the

Use messages to handle problems in multi-threaded programs

In the first half of this year, the project encountered a problem: when the system is running, click the program to display the screen. When the other thread receives the information, it needs to update the local screen. For cross-thread operations,

Notes for remote threads

The structure cannot be defined normally in the remote thread, or it is called a large object. I used static to solve the problem. It may be defined in the static storage area. In addition, remote threads cannot directly use simple strings such as "

Article on learning d3dframework (1)

The unpleasant version of directx9 (decemeber) installed two days ago conflicts with the version of direct3d game programming getting started tutorial. The direct3d framework is used in the book, which is different from the directx9 framework I

Simplified first-person perspective

This is a more simplified first-person perspective.I used the refined matrix transformation directly on the internet, and I was exhausted by the endless questions. Later I realized that the camera's first-person perspective can be realized through

The matrix is not optimized for a simpler first-person perspective.

The simplified Section controls the mouse.// Set the first-person perspective ControlHresult cmyd3dapplication: setfirstview (){D3dxmatrix matidentity;D3dxmatrixidentity (& matidentity );M_pd3ddevice-> settransform (d3dts_world, & matidentity ); //

Test Tool for Memory leakage

From Baidu:Various types of test tools are required for testing. Generally, there are the following types of tools:Test Management Tools: tools that help you complete test plans and Track Test Run results. Such tools also include tools that help

Is that what I said?

Seeing what I said two years ago, my understanding on some points has changed. In fact, they all use Reusable technologies. The most primitive is assembly.The CPU-dependent instruction set. Later, C was used to accelerate System Software

[Partially reprinted] 3D to 2D Conversion

Statement: Most of the copyrights are from the Internet and are copyrighted by all network predecessors. We can use the int 10h interrupt call when compiling a graphics program in DOS.To draw a graph from the monitor. At that time, we drew pixels.

Or embed console in winmain

// Unincmd. cpp: defines the entry point of the application.// # Include "stdafx. H"# Include "unincmd. H" # Include # Include # Include # Include Using namespace STD; # Define max_loadstring 100 // Global variables:Hinstance hinst; // current

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