vb-窗体延时4秒且有由明渐暗效果（Vb- form is delayed for 4 seconds and has been dimmed by clarity）.doc

vb-窗体延时4秒且有由明渐暗效果（Vb- form is delayed for 4 seconds and has been dimmed by clarity） How does VB implement the application when it is started, flash form is delayed for 4 seconds, and it has the effect of fading How does VB implement the application when it is started, flash form is delayed for 4 seconds, and it has the effect of fading --------------------------------------------------------------- 1 add a timer After the 2 form is displayed (Ming), get his DC handle, that is, hDC 3 process the DC (used with the timer) The above is only a train of thought, and has not been realized! Now my VB is broken. --------------------------------------------------------------- Place a TIMER control in the form and set its INTERVAL property to 4000 Then the code is as follows: Option Explicit Private, Const, AW_BLEND = H80000 Private, Const, AW_HIDE = H10000 Private Declare, Function, AnimateWindow, Lib, user32, (ByVal, hWnd, Long, As, ByVal, dwTime, As, Long, ByVal, dwFlags, As, Long) As Long Private, Sub, Form_Unload (Cancel, As, Integer) AnimateWindow, Me.hwnd, H32C, AW_BLEND, Or, AW_HIDE End Sub Private, Sub, Timer1_Timer () Unload Me End Sub --------------------------------------------------------------- AnimateWindow [This, is, preliminary, documentation, and, subject, to, change.] The, AnimateWindow, function, enables, to, produce, special, effects, when, showing, hiding, windows., or, There, are, two, types, of,, animation:, roll, you, animation, animation., and, slide BOOL AnimateWindow (... HWND hWnd, to the window to animate / / handle DWORD dwTime, of animation / / duration DWORD dwFlags / animation type ); Parameters HWnd Specifies, a, handle, to, the, window, to, animate. DwTime Specifies, how, long, it, takes, to, the, animation, in, milliseconds., Typically, an, animation, takes, play,, milliseconds, play., to DwFlags Specifies, the, type, of, animation., parameter, can, be, one, or, more, This, of, the,, following, flags., Flag, Description AW_SLIDE, Uses, slid