Dragging caption-less forms

Dragging caption-less forms

The standard way to move a captionless form is to execute some tricky code from within the MouseDown event procedure. More advanced VB developers can reach the same result by setting up a subclassing procedure to fool the form into believing that the user had clicked on its title bar.

There’s a solution halfway, though, that exploits the WM_NCBUTTONDOWN message but doesn’t resort to subclassing:

Private Declare Function SendMessage Lib "User32" Alias "SendMessageA" (ByVal _    hWnd As Long, ByVal wMsg As Long, ByVal wParam As Long, _    lParam As Any) As LongPrivate Declare Sub ReleaseCapture Lib "User32" ()Private Sub Form_MouseMove(Button As Integer, Shift As Integer, X As Single, _    Y As Single)    Const WM_NCLBUTTONDOWN = &HA1    Const HTCAPTION = 2    If Button = 1 Then        ReleaseCapture        SendMessage Me.hWnd, WM_NCLBUTTONDOWN, HTCAPTION, 0&    End IfEnd Sub

This trick only works if the mouse is clicked on the form, so that the user’s action can be trapped in the form’s MouseDown event. If you want to drag the form wherever the mouse is clicked you must use a subclassing technique.

Share the Post:
Heading photo, Metadata.

What is Metadata?

What is metadata? Well, It’s an odd concept to wrap your head around. Metadata is essentially the secondary layer of data that tracks details about the “regular” data. The regular

XDR solutions

The Benefits of Using XDR Solutions

Cybercriminals constantly adapt their strategies, developing newer, more powerful, and intelligent ways to attack your network. Since security professionals must innovate as well, more conventional endpoint detection solutions have evolved

AI is revolutionizing fraud detection

How AI is Revolutionizing Fraud Detection

Artificial intelligence – commonly known as AI – means a form of technology with multiple uses. As a result, it has become extremely valuable to a number of businesses across

AI innovation

Companies Leading AI Innovation in 2023

Artificial intelligence (AI) has been transforming industries and revolutionizing business operations. AI’s potential to enhance efficiency and productivity has become crucial to many businesses. As we move into 2023, several

data fivetran pricing

Fivetran Pricing Explained

One of the biggest trends of the 21st century is the massive surge in analytics. Analytics is the process of utilizing data to drive future decision-making. With so much of

kubernetes logging

Kubernetes Logging: What You Need to Know

Kubernetes from Google is one of the most popular open-source and free container management solutions made to make managing and deploying applications easier. It has a solid architecture that makes

ransomware cyber attack

Why Is Ransomware Such a Major Threat?

One of the most significant cyber threats faced by modern organizations is a ransomware attack. Ransomware attacks have grown in both sophistication and frequency over the past few years, forcing