Question

I am working on a program base on C++ and also using SiliconSoftware interface.
as you see from the attached pisture I am running the main window with the c++ win32 code, but the display window is created with frame grabber inteface with following code :

int Bits=8; int nId =::CreateDisplay(Bits,GrabberOptions::getWidth(),GrabberOptions::getHeight());SetBufferWidth(nId,GrabberOptions::getWidth(),GrabberOptions::getHeight());::DrawBuffer(nId,Fg_getImagePtrEx(fg,lastPicNr,0,_memoryAllc),lastPicNr,"");

but I want this Diplay window, open with within the Main Window.
How can I do it ? any idea?

Answer 1

Let’s say you have

HWND a = ...
HWND b = ...

assumig they are the native handles of sibling window obtained no matter how.
To make b a child of a, you have to do

Setparent(b,a); //a will be the new parent b
DWORD style = GetWindowLong(b,GWL_STYLE); //get the b style
style &= ~(WS_POPUP|WS_CAPTION); //reset the "caption" and "popup" bits
style |= WS_CHILD; //set the "child" bit
SetWindowLong(b,GWL_STYLE,style); //set the new style of b
RECT rc; //temporary rectangle
GetClientRect(a,&rc); //the "inside border" rectangle for a
MoveWindow(b,rc.left,rc.top,rc.right-rc.left,rc.bottom-rc.top); //place b at (x,y,w,h) in a
UpdateWindow(a);

Nowm you have to handle WM_SIZE from a and move b accordingly, so that it resize together with its (new) parent.