, what method? Because I call setmousecallback if only on the window of OPENCV use so how could this window to display images embedded in QT UI interface or setmousecallback can directly effect on the image shown on the Qlabel

CodePudding user response:

CvGetWindowHandle
SetWindowLong

CodePudding user response:

cvGetWindowHandle

CodePudding user response:

CvGetWindowHandle handle to get the cvGetWindowName unable to get the right window name, use SetWindowLong didn't also way, then I borrowed from another scheme

NamedWindow (" view ", WINDOW_AUTOSIZE);

HWND HWND=(HWND) cvGetWindowHandle (" the view ");

HWND hParent=: : GetParent (HWND);

: : SetParent (hWnd, (hWnd) winId ());

: : ShowWindow (hParent, SW_HIDE);

But still can't will imshow Windows embedded in QT,,, don't know where the operation is the

CodePudding user response:

Comparison, I have reconfirm by SPY++ HWND value, there is no problem,
: : SetParent (hWnd, (hWnd) winId ()); The execution is successful,
The returned handle can be: : ShowWindow (hParent, SW_HIDE); To hide,
But imshow picture is unable to display to QT interface, vomiting blood,,
Don't know what reason led to this problem,,

CodePudding user response:

@ zhao four teachers help please take a look

CodePudding user response:

 HWND Whnd; 
Whnd=(HWND) cvGetWindowHandle (" the view "); 
If (Whnd) {
The HWND parentHwnd; 
ParentHwnd=(HWND) GetWindowLong (Whnd GWL_HWNDPARENT); 
If (parentHwnd) ShowWindow (parentHwnd, SW_HIDE);//hide 
SetWindowLong (parentHwnd GWL_STYLE,/* WS_CLIPCHILDREN | */WS_CLIPSIBLINGS | WS_CHILDWINDOW);//hide the title bar 
SetWindowLong (parentHwnd GWL_EXSTYLE, WS_EX_TOPMOST);//in front of the 
If (parentHwnd) ShowWindow (parentHwnd, SW_SHOW);//show 
} 

CodePudding user response:

@ 4 teacher zhao
Thank you for your reply, I use your code is tested, parentHwnd value is always 0, then the program is still not reach the effect, specific code is as follows:

NamedWindow (" view ", WINDOW_AUTOSIZE);

The HWND Whnd;
Whnd=(HWND) cvGetWindowHandle (" the view ");
If (Whnd)
{
The HWND parentHwnd;
ParentHwnd=(HWND) GetWindowLong (Whnd GWL_HWNDPARENT);
If (parentHwnd)
{
ShowWindow (parentHwnd, SW_HIDE);//hide
}

SetWindowLong (parentHwnd GWL_STYLE,/* WS_CLIPCHILDREN | */WS_CLIPSIBLINGS | WS_CHILDWINDOW);//hide the title bar

SetWindowLong (parentHwnd GWL_EXSTYLE, WS_EX_TOPMOST);//in front of the

If (parentHwnd)
{
ShowWindow (parentHwnd, SW_SHOW);//show
}
}

CodePudding user response:

 

NamedWindow (" view ", WINDOW_AUTOSIZE); 

The HWND Whnd; 
Whnd=(HWND) cvGetWindowHandle (" the view "); 
If (Whnd) 
{
The HWND parentHwnd; 
ParentHwnd=(HWND) GetWindowLong (Whnd GWL_HWNDPARENT); 
If (parentHwnd) 
{
ShowWindow (parentHwnd, SW_HIDE);//hide 
} 

SetWindowLong (parentHwnd GWL_STYLE,/* WS_CLIPCHILDREN | */WS_CLIPSIBLINGS | WS_CHILDWINDOW);//hide the title bar 

SetWindowLong (parentHwnd GWL_EXSTYLE, WS_EX_TOPMOST);//in front of the 

If (parentHwnd) 
{
ShowWindow (parentHwnd, SW_SHOW);//show 
} 
} 

CodePudding user response:

I attached a complete code

 

# include "mainwindow. H" 
# include "ui_mainwindow. H" 



MainWindow: : MainWindow (QWidget * parent) : 
QMainWindow (parent), 
UI (new UI: : MainWindow) 
{
The UI - & gt; SetupUi (this); 

//open the camera 
Bool ok=mvCapture. Open (0); 

NamedWindow (" view ", WINDOW_AUTOSIZE); 

The HWND Whnd; 
Whnd=(HWND) cvGetWindowHandle (" the view "); 
If (Whnd) 
{
The HWND parentHwnd; 
ParentHwnd=(HWND) GetWindowLong (Whnd GWL_HWNDPARENT); 
If (parentHwnd) 
{
ShowWindow (parentHwnd, SW_HIDE);//hide 
} 

SetWindowLong (parentHwnd GWL_STYLE,/* WS_CLIPCHILDREN | */WS_CLIPSIBLINGS | WS_CHILDWINDOW);//hide the title bar 

SetWindowLong (parentHwnd GWL_EXSTYLE, WS_EX_TOPMOST);//in front of the 

If (parentHwnd) 
{
ShowWindow (parentHwnd, SW_SHOW);//show 
} 
} 

QObject: : connect (& amp; DataTimer, SIGNAL (timeout ()), and this, SLOT (OnTimer ())); 
DataTimer. Start (100); 



//a=QWidget * QWidget: : find ((WId) hWnd1); 
//UI - & gt; GridLayout - & gt; AddWidget (a); 
} 

MainWindow: : ~ MainWindow () 
{
Delete the UI; 
} 


//display timer 
Void MainWindow: : OnTimer () 
{
Mat srcImage; 
MvCapture> SrcImage; 
Imshow (" view ", srcImage); 
} 

CodePudding user response:

My GWL_HWNDPARENT this parameter wave red, don't know why, the Windows header files are added

CodePudding user response:

This - & gt; The resize (600400);
QWidget * QWidget=new QWidget (this);
QWidget - & gt; The resize (300300);
QWidget - & gt; To move (0, 0);
NamedWindow (" view ", WINDOW_NORMAL);
ResizeWindow (" view ", 300300);
HWND Whnd=static_cast & lt; HWND> (cvGetWindowHandle (" the view "));

QDebug () & lt; If (Whnd)
{
HWND hParent=: : GetParent (Whnd);
QWidget: : SetParent (Whnd, (HWND) - & gt; WinId ());
: : ShowWindow (hParent, SW_HIDE);//hide to run the program frame

}

CodePudding user response:

null