300分！！求助对话框拖动问题！

[qqxia]

怎么才能实现鼠标按住对话框的边框，拖动对话框大小，在鼠标按下拖动的时候不改变对话框大小，但是显示对话框未来的大小的虚线框，在鼠标松开的时候才改变对话框大小！！

我的帖子：
http://community.csdn.net/Expert/topic/3623/3623634.xml?temp=.8683893
http://community.csdn.net/Expert/topic/3627/3627110.xml?temp=2.361697E-02

[DentistryDoctor]

http://www.codeguru.com/Cpp/W-D/dislog/resizabledialogs/article.php/c1917/

[qqxia]

DentistryDoctor(雅克医生<改行做程序员了>) 给的例子不行！不是我所要求的！

[aoosang]

呵呵,我给你说的方法不行?我已经给你信箱里发了个demo

[aoosang]

重载WM_SIZING消息不行？？

[koko1998]

关注中

[laogong]

up学习

[koko1998]

CS_HREDRAW|CS_VREDRAW
应该跟以上两个属性有关

[qqxia]

主要是显示对话框未来的大小的虚线框，aoosang(智慧的鱼) 的例子好像什么都没有做，呵呵

[qqxia]

to all：
问题搞定了，多谢dandycheung(珠穆朗玛)，一会散分！

[xdsh00]

要分啊....嘿嘿

[oyljerry]

用的什么方法?

[qqxia]

现在还有一点点问题，呵呵，等我完全解决了，总结一下贴出来！

[handwolf]

楼主是在什么地方SetCapture()的？

[handwolf]

我也解决了，想要的留下email！

[SmallGreenGrass]

给我一个：[e-mail]

[dandycheung]

答案见此帖 http://community.csdn.net/Expert/topic/3623/3623634.xml?temp=.8533289
原来楼主海发了好几个帖呢！我接分来了。;) 窃喜中...

[handwolf]

to SmallGreenGrass():

已经给你发了！

[handwolf]

解决方法：
因为找不到onsizing，所以只能在onsize里面跳出，
mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0);//get out of system sizing

再模拟鼠标左键按下
SetCursorPos(m_rctWindow.left,m_rctWindow.top);
mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0);//down the left mouse
SetCursorPos(oldPoint.x,oldPoint.y);//位置要是原来光标的位置

然后在onsizing后的第一次OnLButtonDown里面得到点在框架的位置（8个位置）！

接下来的就是在onmousemove和onlbuttonup里面处理了！
绘画的方法是dandycheung(珠穆朗玛) 所说的方法！

希望大家多交流，怎么得到点在框架的位置（8个位置）？？？？？？？？？
///////////////
.h文件
///////////////
对话框头文件中加入
int m_flagSize;//标志位，控制是否在改变大小！1的时候在改变大小
CRect m_rctWindow;//窗口矩形
CRect m_rctDraw;//虚线矩形
int m_moveDirect; //拖动的位置，1~8代表上右下左，右上，右下，左下，左上

afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
afx_msg void OnSize(UINT nType, int cx, int cy);
afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
///////////////////////////////////////////////////////////////////////////////
///////////////
.cpp文件
///////////////
void CResizingDlg::OnLButtonUp(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default

if(m_flagSize == 1){
m_flagSize = -1;
//erase the pre rectangle start
{
HDC hdc = ::GetDC(NULL);
CDC* pDC = CDC::FromHandle(hdc);
CRectTracker rectTracker;
m_rctDraw.NormalizeRect();
rectTracker.DrawTrackerRect(&m_rctDraw, NULL, pDC, NULL);
::ReleaseDC(NULL,hdc);
}
//erase the pre rectangle end

//sizing the window
m_rctWindow.NormalizeRect();
::SetWindowPos(this->GetSafeHwnd(),HWND_TOP,m_rctWindow.left,m_rctWindow.top,m_rctWindow.Width(),m_rctWindow.Height(),SWP_SHOWWINDOW);

ReleaseCapture();
}
CDialog::OnLButtonUp(nFlags, point);
}

void CResizingDlg::OnSize(UINT nType, int cx, int cy)
{
CDialog::OnSize(nType, cx, cy) ;
// TODO: Add your message handler code here

if(m_flagSize != 0){
m_flagSize =0;
}else if(m_flagSize == 0){
GetClientRect(&m_rctWindow);
ClientToScreen(&m_rctWindow);
CPoint oldPoint;
GetCursorPos(&oldPoint); //get the pos of cursor

mouse_event(MOUSEEVENTF_LEFTUP,0,0,0,0);//get out of system sizing
SetCursorPos(m_rctWindow.left,m_rctWindow.top);//for left mouse button down in the client area
mouse_event(MOUSEEVENTF_LEFTDOWN,0,0,0,0);//down the left mouse
SetCursorPos(oldPoint.x,oldPoint.y);//
m_flagSize = 1;
}
}

void CResizingDlg::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default

if(m_flagSize == 1){//sizing the window
CPoint oldPoint = point;
this->ClientToScreen(&oldPoint);

//erase the pre rectangle start
{
HDC hdc = ::GetDC(NULL);
CDC* pDC = CDC::FromHandle(hdc);
CRectTracker rectTracker;
m_rctDraw.NormalizeRect();
rectTracker.DrawTrackerRect(&m_rctDraw, NULL, pDC, NULL);
::ReleaseDC(NULL,hdc);
}
//erase the pre rectangle end

//changed the data of rectangle start
GetWindowRect(&m_rctWindow);
switch(m_moveDirect) {
case 1://top
m_rctWindow.top = oldPoint.y;
break;
case 2://right
m_rctWindow.right = oldPoint.x;
break;
case 3://bottom
m_rctWindow.bottom = oldPoint.y;
break;
case 4://left
m_rctWindow.left = oldPoint.x;
break;
case 5://topright
m_rctWindow.top = oldPoint.y;
m_rctWindow.right = oldPoint.x;
break;
case 6://bottomright
m_rctWindow.bottom= oldPoint.y;
m_rctWindow.right = oldPoint.x;
break;
case 7://bottomleft
m_rctWindow.left = oldPoint.x;
m_rctWindow.bottom = oldPoint.y;
break;
case 8://topleft
m_rctWindow.left = oldPoint.x;
m_rctWindow.top = oldPoint.y;
break;
default:
break;
}
m_rctDraw = m_rctWindow;
//changed the data of rectangle end


//Draw the rectangle start
{
HDC hdc = ::GetDC(NULL);
CDC* pDC = CDC::FromHandle(hdc);
CRectTracker rectTracker;
m_rctDraw.NormalizeRect();
rectTracker.DrawTrackerRect(&m_rctDraw, NULL, pDC, NULL);
::ReleaseDC(NULL,hdc);
}
//Draw the rectangle end

}else{

}


CDialog::OnMouseMove(nFlags, point);
}

void CResizingDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default
GetWindowRect(&m_rctWindow);
CPoint oldPoint;
GetCursorPos(&oldPoint); //get the pos of cursor

if(m_flagSize == 1)
{
//check the pos of cursor start
//15---can be changed
if(fabs(oldPoint.y - m_rctWindow.top)<15){
if(fabs(oldPoint.x - m_rctWindow.right)<15){//topright
m_moveDirect = 5;
m_rctDraw.left = m_rctWindow.left;
m_rctDraw.right = m_rctWindow.left;
m_rctDraw.top = m_rctWindow.bottom;
m_rctDraw.bottom= m_rctWindow.bottom;
}else if(fabs(oldPoint.x - m_rctWindow.left)<15){//topleft
m_moveDirect = 8;
m_rctDraw.left = m_rctWindow.right;
m_rctDraw.right = m_rctWindow.right;
m_rctDraw.top = m_rctWindow.bottom;
m_rctDraw.bottom= m_rctWindow.bottom;
}else{//上
m_moveDirect = 1;
m_rctDraw.left = m_rctWindow.left;
m_rctDraw.right = m_rctWindow.right;
m_rctDraw.top = m_rctWindow.bottom;
m_rctDraw.bottom= m_rctWindow.bottom;
}
}else if(fabs(oldPoint.y - m_rctWindow.bottom)<15){
if(fabs(oldPoint.x - m_rctWindow.right)<15){//bottomright
m_moveDirect = 6;
m_rctDraw.left = m_rctWindow.left;
m_rctDraw.right = m_rctWindow.left;
m_rctDraw.top = m_rctWindow.top;
m_rctDraw.bottom= m_rctWindow.top;
}else if(fabs(oldPoint.x - m_rctWindow.left)<15){//bottomleft
m_moveDirect = 7;
m_rctDraw.left = m_rctWindow.right;
m_rctDraw.right = m_rctWindow.right;
m_rctDraw.top = m_rctWindow.top;
m_rctDraw.bottom= m_rctWindow.top;
}else{//下
m_moveDirect = 3;
m_rctDraw.left = m_rctWindow.left;
m_rctDraw.right = m_rctWindow.right;
m_rctDraw.top = m_rctWindow.top;
m_rctDraw.bottom= m_rctWindow.top;
}
}else if(fabs(oldPoint.x - m_rctWindow.right)<15){//right
m_moveDirect = 2;
m_rctDraw.left = m_rctWindow.left;
m_rctDraw.right = m_rctWindow.left;
m_rctDraw.top = m_rctWindow.top;
m_rctDraw.bottom= m_rctWindow.bottom;
}else if(fabs(oldPoint.x - m_rctWindow.left)<15){//left
m_moveDirect = 4;
m_rctDraw.left = m_rctWindow.right;
m_rctDraw.right = m_rctWindow.right;
m_rctDraw.top = m_rctWindow.top;
m_rctDraw.bottom= m_rctWindow.bottom;
}else{
m_flagSize = 0;
}
//check the pos of cursor end

if (m_flagSize == 1) {
SetCapture();
}
}
CDialog::OnLButtonDown(nFlags, point);
}