QB64/InForm
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Page: __UI_UnloadSignal
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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
1 __UI_UnloadSignal
FellippeHeitor edited this page 2016-12-22 00:13:09 -02:00

The global variable __UI_UnloadSignal will be set to True if the user requested the program to be closed, either by clicking the X button on the title bar or by hitting Alt+F4 (Windows only).

In an BeforeUnload event, set this variable to False to cancel the quit request.