Resizing another threads window with MFC above screen size

To resize another thread's window with MFC above the screen size, you can follow these steps:

1. Get the handle of the window you want to resize. You can use the FindWindow function to obtain the window handle based on the window title or class name.

2. Use the window handle to resize the window. You can use the SetWindowPos function to set the new position and size of the window.

Here's a code example in MFC to demonstrate how to do this:

cppCopy code
#include <afxwin.h>



void ResizeWindowAboveScreenSize() {

    // Step 1: Get the handle of the window you want to resize

    HWND hWnd = ::FindWindow(nullptr, L"Window Title"); // Replace "Window Title" with the actual window title



    if (hWnd == nullptr) {

        AfxMessageBox(L"Window not found!");

        return;

    }



    // Step 2: Get the screen size

    CRect screenRect;

    SystemParametersInfo(SPI_GETWORKAREA, 0, &screenRect, 0);



    // Calculate the new size (e.g., half the screen width and height)

    int newWidth = screenRect.Width() / 2;

    int newHeight = screenRect.Height() / 2;



    // Step 3: Resize the window

    ::SetWindowPos(hWnd, nullptr, 0, 0, newWidth, newHeight, SWP_NOMOVE | SWP_NOZORDER);

}

Please note that resizing another thread's window can lead to unexpected behavior or violate security and user experience best practices. It's generally not recommended to resize windows of other applications without the user's consent, as it can lead to confusion and frustration. If you need to control the size or position of a window, it's better to communicate with the target application through supported means, like sending messages or using inter-process communication (IPC).