QB64/InForm
QB64/InForm
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Page: BeforeUnload
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Align BackStyle BeforeInit BeforeUnload BeforeUpdateDisplay Button Caption Checkbox Color properties Constants Disabled Events Focus events Font Frame Global Variables HasBorder Hidden Home KeyPress Keyboard modifiers Label List methods List LoadImage Mask Menus MessageBox Function Methods Min and Max Mouse events NumericTextbox OnLoad PasswordField Picture box PictureBox Drawing Position and size Progress bar Properties Radio button SetCaption SetFocus Stretch Text TextChanged Textbox Toggle switch Tool tip Track bar Value ValueChanged __UI_ prefix __UI_ForceRedraw __UI_KeepScreenHidden __UI_KeyHit __UI_UnloadSignal
2 BeforeUnload
FellippeHeitor edited this page 2016-12-22 00:13:20 -02:00

The BeforeUnload event is triggered right before your form is closed, and gives you a chance to perform any cleanup routines (or data saving routines) before leaving.

If you want to cancel the quit request, set the __UI_UnloadSignal variable to False.