如何实现窗口抖动

[周晓荣]

我想实现窗口全屏抖动

下面的WIN32程序是实现另外一种效果的，如何改进，使其变成窗口抖动呢？

能否帮忙解释一下程序
/*------------------------------------------------
SCRAMBLE.C -- Scramble (and Unscramble) Screen
(c) Charles Petzold, 1998
------------------------------------------------*/
#include <windows.h>

#define NUM 30

//LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static int iKeep [NUM][4] ;
HDC hdcScr, hdcMem ;
int cx, cy ;
HBITMAP hBitmap ;
HWND hwnd ;
int i, j, x1, y1, x2, y2 ;

if (LockWindowUpdate (hwnd = GetDesktopWindow ()))
{
hdcScr = GetDCEx (hwnd, NULL, DCX_CACHE | DCX_LOCKWINDOWUPDATE) ;
hdcMem = CreateCompatibleDC (hdcScr) ;
cx = GetSystemMetrics (SM_CXSCREEN) / 10 ;
cy = GetSystemMetrics (SM_CYSCREEN) / 10 ;
hBitmap = CreateCompatibleBitmap (hdcScr, cx, cy) ;

SelectObject (hdcMem, hBitmap) ;

srand ((int) GetCurrentTime ()) ;

for (i = 0 ; i < 2 ; i++)
for (j = 0 ; j < NUM ; j++)
{
if (i == 0)
{
iKeep [j] [0] = x1 = cx * (rand () % 10) ;
iKeep [j] [1] = y1 = cy * (rand () % 10) ;
iKeep [j] [2] = x2 = cx * (rand () % 10) ;
iKeep [j] [3] = y2 = cy * (rand () % 10) ;
}
else
{
x1 = iKeep [NUM - 1 - j] [0] ;
y1 = iKeep [NUM - 1 - j] [1] ;
x2 = iKeep [NUM - 1 - j] [2] ;
y2 = iKeep [NUM - 1 - j] [3] ;
}
BitBlt (hdcMem, 0, 0, cx, cy, hdcScr, x1, y1, SRCCOPY) ;
BitBlt (hdcScr, x1, y1, cx, cy, hdcScr, x2, y2, SRCCOPY) ;
BitBlt (hdcScr, x2, y2, cx, cy, hdcMem, 0, 0, SRCCOPY) ;

Sleep (10) ;
}

DeleteDC (hdcMem) ;
ReleaseDC (hwnd, hdcScr) ;
DeleteObject (hBitmap) ;

LockWindowUpdate (NULL) ;
}
return FALSE ;
}

[_JeffreyWu]

参考CRect::OffsetRect()

[RLib]

MoveWindow就可以实现最简单的抖动

[ls2141]

定时 一顿MoveWindow

[fjbuilding]

1.解释
/*------------------------------------------------
SCRAMBLE.C -- Scramble (and Unscramble) Screen
(c) Charles Petzold, 1998
------------------------------------------------*/
#include <windows.h>

#define NUM 30

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static int iKeep [NUM][4] ;
HDC hdcScr, hdcMem ;
int cx, cy ;
HBITMAP hBitmap ;
HWND hwnd ;
int i, j, x1, y1, x2, y2 ;

if (LockWindowUpdate (hwnd = GetDesktopWindow ()))//禁止窗口更新
{
hdcScr = GetDCEx (hwnd, NULL, DCX_CACHE | DCX_LOCKWINDOWUPDATE) ;//得到屏幕dc
hdcMem = CreateCompatibleDC (hdcScr) ;//得到与屏幕dc兼容的内存dc
cx = GetSystemMetrics (SM_CXSCREEN) / 10 ;//得到窗口尺寸（x）的十分之一
cy = GetSystemMetrics (SM_CYSCREEN) / 10 ;//得到窗口尺寸（y）的十分之一
hBitmap = CreateCompatibleBitmap (hdcScr, cx, cy) ;//创建与屏幕dc兼容的彩色比特图画布用于在内存里面作图

SelectObject (hdcMem, hBitmap) ;//设置此比特图为内存画布

srand ((int) GetCurrentTime ()) ;//随机数重排列

for (i = 0 ; i < 2 ; i++)
for (j = 0 ; j < NUM ; j++)
{
if (i == 0)
{
iKeep [j] [0] = x1 = cx * (rand () % 10) ;
iKeep [j] [1] = y1 = cy * (rand () % 10) ;
iKeep [j] [2] = x2 = cx * (rand () % 10) ;
iKeep [j] [3] = y2 = cy * (rand () % 10) ;
}
else
{
x1 = iKeep [NUM - 1 - j] [0] ;
y1 = iKeep [NUM - 1 - j] [1] ;
x2 = iKeep [NUM - 1 - j] [2] ;
y2 = iKeep [NUM - 1 - j] [3] ;
}
BitBlt (hdcMem, 0, 0, cx, cy, hdcScr, x1, y1, SRCCOPY) ;
BitBlt (hdcScr, x1, y1, cx, cy, hdcScr, x2, y2, SRCCOPY) ;
BitBlt (hdcScr, x2, y2, cx, cy, hdcMem, 0, 0, SRCCOPY) ;
//这三句BitBle效果类似c=a;a=b;b=c;也就是两个尺寸{cx，cy}的屏幕图块内容进行交换；

Sleep (10) ;//延迟10毫秒
}//循环交换直到全屏幕图块交换过一遍

DeleteDC (hdcMem) ;//SDK的dc用完要记得删除
ReleaseDC (hwnd, hdcScr) ;//内存dc用DeleteDC，窗口dc用ReleaseDC
DeleteObject (hBitmap) ;//比特图也要删除

LockWindowUpdate (NULL) ;//解除锁定使窗口又可以正常更新
}
return FALSE ;
}

2.如果要窗口抖动，可以使用MoveWindow
BOOL MoveWindow(
HWND hWnd, // handle to window
int X, // horizontal position
int Y, // vertical position
int nWidth, // width
int nHeight, // height
BOOL bRepaint // repaint option
);

3.如果需要窗口禁止而窗口内部的图像抖动

/*------------------------------------------------
SCRAMBLE.C -- Scramble (and Unscramble) Screen
(c) Charles Petzold, 1998
------------------------------------------------*/
#include <windows.h>

#define NUM 30

//LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static int iKeep [NUM][4] ;
HDC hdcScr, hdcMem ;
int cx, cy ;
HBITMAP hBitmap ;
HWND hwnd ;
int j, x1, y1, x2, y2 ;

if (LockWindowUpdate (hwnd = GetDesktopWindow ()))
{
hdcScr = GetDCEx (hwnd, NULL, DCX_CACHE | DCX_LOCKWINDOWUPDATE) ;
hdcMem = CreateCompatibleDC (hdcScr) ;
cx = GetSystemMetrics (SM_CXSCREEN);
cy = GetSystemMetrics (SM_CYSCREEN);
hBitmap = CreateCompatibleBitmap (hdcScr, cx, cy) ;

SelectObject (hdcMem, hBitmap) ;

srand ((int) GetCurrentTime ()) ;

for (j = 0 ; j < NUM ; j++)
{
BitBlt (hdcScr, 0, 10, cx, cy, hdcScr, 0, 0, SRCCOPY) ;
Sleep (10) ;
BitBlt (hdcScr, 0, 0, cx, cy, hdcScr, 0, 10, SRCCOPY) ;//上下抖动；则把0，10，0，0，0，0，0，10，改成10，0，0，0，0，0，10，0；
Sleep (10) ;
}

DeleteDC (hdcMem) ;
ReleaseDC (hwnd, hdcScr) ;
DeleteObject (hBitmap) ;

LockWindowUpdate (NULL) ;
}
return FALSE ;
}

[_JeffreyWu]

刚出炉的,参考一下吧

void Move()
{
	srand((unsigned)time(NULL));
	HWND hWnd = ::AfxGetMainWnd()->GetSafeHwnd();
	RECT rcOld, rcNew;
	::GetWindowRect(hWnd, &rcOld);
	POINT pt;
	pt.x = rcOld.left;
	pt.y = rcOld.top;
	::ScreenToClient(hWnd, &pt);
	::memcpy(&rcNew, &rcOld, sizeof(RECT));

	int iWidth = rcOld.right-rcOld.left;
	int iHeight = rcOld.bottom-rcOld.top;
	int x = 0, y = 0;
	for (int i =0; i<80; i++)
	{
		x = rand()%80-40;
		y = rand()%80-40;
		::MoveWindow(hWnd, rcNew.left+x, rcNew.top+y, iWidth, iHeight, TRUE);
	}
	::MoveWindow(hWnd, rcOld.left, rcOld.top, iWidth, iHeight, TRUE);
}

[_JeffreyWu]

以下代码可以去掉,没用.
//POINT pt;
//pt.x = rcOld.left;
//pt.y = rcOld.top;
//::ScreenToClient(hWnd, &pt);

[_JeffreyWu]

不用抖动DC吧,抖动窗体就可以了吧

[周晓荣]

[Quote=引用 4 楼 fjbuilding 的回复:]
[/Quote]
非常感谢您的帮忙

同时也感谢所有人。

[羽飞]

MoveWindow是最简单的，这个网上还有其它例子

[zhouyao85258]

俺还有更简单的

  int top = this.Top;
            int left = this.Left;
            for (int i = 1; i <= 65; i += 5)
            {
                this.Top= Convert.ToInt32(top + Math.Sin(i) * 5);
                this.Left = Convert.ToInt32(left + Math.Cos(i) * 5);
                System.Threading.Thread.Sleep(50);
            }