1樓：匿名使用者
'在窗體上加入控制項timer1，然後複製下面**，執行即可。
option explicit
private declare function selectobject lib "gdi32" (byval hdc as long, byval hobject as long) as long
private declare function deleteobject lib "gdi32" (byval hobject as long) as long
private declare function createpen lib "gdi32" (byval npenstyle as long, byval nwidth as long, byval crcolor as long) as long
private declare function rectangle lib "gdi32" (byval hdc as long, byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long) as long
private declare function ellipse lib "gdi32" (byval hdc as long, byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long) as long
private declare function getdc lib "user32" (byval hwnd as long) as long
private declare function getcursorpos lib "user32" (lppoint as pointapi) as long
private declare function releasedc lib "user32" (byval hwnd as long, byval hdc as long) as long
private declare function setrop2 lib "gdi32.dll" (byval hdc as long, byval ndrawmode as long) as long
private const r2_xorpen as long = 7
private const r2_black as long = 1
private const r2_not as long = 6
private const ps_solid as long = 0
private const ps_dash as long = 1
private type pointapi
x as long
y as long
end type
dim deskdc as long
dim oldx as pointapi
dim hpen as long, holdpen as long
private sub form_load()
hpen = createpen(ps_solid, 2, rgb(255, 0, 0))
deskdc = getdc(0)
holdpen = selectobject(deskdc, hpen)
end sub
private sub form_unload(cancel as integer)
selectobject deskdc, holdpen
deleteobject hpen
deskdc = releasedc(0, deskdc)
end sub
private sub timer1_timer()
dim p as pointapi
getcursorpos p
if p.x <> oldx.x and p.y <> oldx.y then
setrop2 deskdc, r2_not
rectangle deskdc, oldx.x, oldx.y, oldx.x - 10, oldx.y - 10
oldx.x = p.x: oldx.y = p.y
rectangle deskdc, p.x, p.y, p.x - 10, p.y - 10
end if
end sub
2樓：記憶中有你
1樓的**,最好是在視窗滑鼠的move事件中重繪比較好,這樣才比較符合樓主的問題啊,隨滑鼠移動,用timer會有延時的效果,不過就是可能會比較占用資源,頻繁重繪的結果,還有,如果你要畫邊框,我覺得,你繪製乙個矩形框的游標就可以了,完全不用自己重繪,那樣是最快的!windows硬體級別的切換,會很流暢的跟隨你的滑鼠移動,又不會占用太多資源,隨便找個圖示編輯器就可以實現了,沒有必要那麼麻煩的,呵呵,是吧~!
vb 如何在螢幕上 畫乙個紅色邊框 並隨滑鼠移動? 25
3樓：匿名使用者
把窗體的圖象整個儲存在乙個bitmap裡或者直接儲存在視訊記憶體裡，然後滑鼠移動時先用bitmap畫窗體,再畫框，這樣是占用資源最少的。用.net的system.
drawing裡的畫圖功能或者directx去做這件事情。
實際上所謂的擦除就是重新畫一張背景，然後再背景上畫移動的東西，和我們平時寫字然後搽掉的概念不同的，顯示卡顯示的方式都是一塊一塊的圖案往上貼而已。就是說實際上擦除只是在後台把背景畫一次，然後再上面再畫移動的東西，然後再把這個畫好的合成圖案再畫到前台顯示出來
4樓：匿名使用者
這是按鈕隨滑鼠移動的**，你可以修改一下就可以了。
private sub form_mousemove(button as integer, shift as integer, x as single, y as single)
command1.left = x
command1.top = y
end sub
5樓：匿名使用者
'在窗體上加入控制項timer1，然後複製下面**，執行即可。
option explicit
private declare function selectobject lib "gdi32" (byval hdc as long, byval hobject as long) as long
private declare function deleteobject lib "gdi32" (byval hobject as long) as long
private declare function createpen lib "gdi32" (byval npenstyle as long, byval nwidth as long, byval crcolor as long) as long
private declare function rectangle lib "gdi32" (byval hdc as long, byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long) as long
private declare function ellipse lib "gdi32" (byval hdc as long, byval x1 as long, byval y1 as long, byval x2 as long, byval y2 as long) as long
private declare function getdc lib "user32" (byval hwnd as long) as long
private declare function getcursorpos lib "user32" (lppoint as pointapi) as long
private declare function releasedc lib "user32" (byval hwnd as long, byval hdc as long) as long
private declare function setrop2 lib "gdi32.dll" (byval hdc as long, byval ndrawmode as long) as long
private const r2_xorpen as long = 7
private const r2_black as long = 1
private const r2_not as long = 6
private const ps_solid as long = 0
private const ps_dash as long = 1
private type pointapi
x as long
y as long
end type
dim deskdc as long
dim oldx as pointapi
dim hpen as long, holdpen as long
private sub form_load()
hpen = createpen(ps_solid, 2, rgb(255, 0, 0))
deskdc = getdc(0)
holdpen = selectobject(deskdc, hpen)
end sub
private sub form_unload(cancel as integer)
selectobject deskdc, holdpen
deleteobject hpen
deskdc = releasedc(0, deskdc)
end sub
private sub timer1_timer()
dim p as pointapi
getcursorpos p
if p.x <> oldx.x and p.y <> oldx.y then
setrop2 deskdc, r2_not
rectangle deskdc, oldx.x, oldx.y, oldx.x - 10, oldx.y - 10
oldx.x = p.x: oldx.y = p.y
rectangle deskdc, p.x, p.y, p.x - 10, p.y - 10
end if
end sub
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