请问拥有一个窗口的句柄后如何是这个窗口位于屏幕的正中央？

[flyingpig2003]

谢谢！

[mynamelj]

创建一个非模态窗口:

CSize size;
CRect ChildRect;
CRect ParentRect;

CDialog* pDlg = new CDialog();
pDlg->Create(IDD_MYDIALOG,this); //从资源中上装入对话框

pDlg->GetWindowRect(&ChildRect);
GetWindowRect(&ParentRect);

size.cx = (ParentRect.right - ChildRect.right)/2;
size.cy = (ParentRect.bottom - ChildRect.bottom)/2;

pDlg->MoveWindow(size.cx,size.cx,ChildRect.right,ChildRect.bottom,TRUE);
PDlg->ShowWindow(SW_SHOWNORMAL);

[mynamelj]

void CenterWindow(
CWnd* pAlternateOwner = NULL
);
//这个函数也可以帮你实现

[dropingleaf]

void CenterWindow( CWnd* pAlternateOwner = NULL );
这个是子窗体位于主窗体的中央吧

[Jimmy_Xia]

CenterWindow(GetDesktopWindow())

[mynamelj]

算出来不就得了吗？
HWND hChild; //Child window handle.
HWND hParent; //Parent window handle.
CSize size;
CRect ChildRect;
CRect ParentRect;
GetWindowRect(hChild,&ChildRect);
GetWindowRect(hParent,&ParentRect);

size.cx = (ParentRect.right - ChildRect.right)/2;
size.cy = (ParentRect.bottom - ChildRect.bottom)/2;

[Mr-Chen]

SetWindowPos

[flyingpig2003]

各位，关键是我没法取得哪个窗口的rect，取出来的数据是错的！

[薛定谔之死猫]

得到桌面窗口句柄->得到桌面窗口Rect->得到该窗口Rect->计算后SetWindowPos

[薛定谔之死猫]

类似代码
nWidth = (rChild.right - rChild.left);
nHeight = (rChild.bottom - rChild.top);

// calculate parent window center point
pCenter.x = rParent.left+((rParent.right
- rParent.left)/2);
pCenter.y = rParent.top+((rParent.bottom
- rParent.top)/2);

// calculate message box starting point
pStart.x = (pCenter.x - (nWidth/2));
pStart.y = (pCenter.y - (nHeight/2));

// adjust if message box is off desktop
if(pStart.x < 0) pStart.x = 0;
if(pStart.y < 0) pStart.y = 0;
if(pStart.x + nWidth > rDesktop.right)
pStart.x = rDesktop.right - nWidth;
if(pStart.y + nHeight > rDesktop.bottom)
pStart.y = rDesktop.bottom - nHeight;

// move message box
MoveWindow(hChildWnd,
pStart.x, pStart.y,
nWidth, nHeight,
FALSE);

具体的例子
http://www.codeguru.com/Cpp/W-P/win32/messagebox/article.php/c4541/

[竹君子]

void CenterWindow( CWnd* pAlternateOwner = NULL );

[mynamelj]

你首先要获得了窗口句柄,然后再用GetWindowRect去获得它的矩形尺寸!

[kugou123]

取得桌面大小，然后用MoveWindow改变窗口位置