The loading process of VB6.0 form

In VB6.0, multiple events are triggered when a form is loaded, and these events are executed in a specific order. The following is the execution sequence of common events during the form loading process:

Form_QueryUnloadEvent: Triggered just before the form is about to close. You can do some cleanup in this event or ask the user if they really want to close the form.
Form_UnloadEvent: Triggered before the form is closed. You can perform final cleanup operations in this event.
Form_LoadEvent: Triggered when the form loads. You can perform form initialization operations in this event, such as setting properties of controls, loading data, etc.
Form_ActivateEvent: Triggered when the form is activated (gets focus). You can perform specific operations in this event, such as updating the interface, setting the default focus, etc.
Form_ResizeEvent: Triggered when the size of the form changes. You can adjust the position and size of the control based on the size of the form in this event.

It should be noted that the triggering order of the above events is fixed, but not all events will definitely be triggered. For example, if the close operation is canceled before the form is closed ( Form_QueryUnloadsetting Cancelthe parameter in the event to True), then Form_Unloadthe event will not be triggered.

In addition, there are some other events, such as Form_Click, Form_KeyPressetc., which are related to the interactive behavior of the form and will be triggered under specific user operations.

To sum up, the execution sequence of common events during form loading is: Form_QueryUnload-> Form_Unload-> Form_Load-> Form_Activate-> Form_Resize. You can write appropriate code in these events to control the behavior and state of the form as needed.

Determine the focus position of the pointer

Through the above understanding and after trying it, I found that Form_Loadit will not work if you add the code in . You need to Form_Activateadd the code in .

In VB6, Form_Activateit is an event of the form object, which is triggered when the form is activated (gets focus). Events are fired when a form changes from inactive to active, Form_Activateallowing you to perform certain actions.

Here are some Form_Activatesituations where events might be used:

Initialize data: You can perform some initialization operations when the form is activated, such as loading data to controls, setting default values, etc. This ensures that the required data and state are available when the form is activated.
Update the interface: If your form has dynamic content or needs to be updated based on the state of other forms or controls, you can use Form_Activateevents to update the interface. Form_ActivateFor example, you can update information on the main form in an event when returning to the main form from another form .
Handling focus: You can set the default focus when a form is activated to ensure that users can type directly into specific controls. You can use SetFocusmethods to set focus to the desired control.
Perform specific actions: Depending on the specific functionality of the form, you can Form_Activateperform specific actions in the event. For example, open a file, start a timer, connect to a database, etc.

In summary, Form_Activateevents provide an opportunity to perform specific actions when a form is activated to ensure that form initialization, interface updates, and other related tasks are completed.

add code

Private Sub Form_Activate()
    TextBox.SetFocus ' 设置默认指针的位置
End Sub

Here TextBoxneeds to be replaced with the control name you need.

The effect is as follows

The specified focus is not set

Insert image description here

Focus is set