How do I implement dragging a window using its client area?

by

Implement a message handler for WM_NCHITTEST. Call DefWindowProc() and check if the return value is HTCLIENT. Return HTCAPTION if it is, otherwise return the DefWindowProc return value. You can now click the client area and drag the window, just like you’d drag a window by clicking on the caption.

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
    switch (message)
    {
    case WM_NCHITTEST: {
        LRESULT hit = DefWindowProc(hWnd, message, wParam, lParam);
        if (hit == HTCLIENT) hit = HTCAPTION;
        return hit;
    }
    // etc..
}

More Related Contents:

  1. How to get main window handle from process id?
  2. How to make thread sleep less than a millisecond on Windows
  3. How to read a value from the Windows registry
  4. What does “WINAPI” in main function mean?
  5. Win32 programming hiding console window
  6. Can I use CreateFile, but force the handle into a std::ofstream?
  7. SetupDiGetDeviceProperty usage example
  8. Read process memory of a process does not return everything
  9. How to get the process name in C++
  10. Using CreateWindowEx to Make a Message-Only Window
  11. How do I get the window handle of the desktop?
  12. Intercept windows open file
  13. C++ Executing CMD Commands
  14. Detecting simulated keyboard/mouse input
  15. WinAPI Sleep() function call sleeps for longer than expected
  16. Best method for storing this pointer for use in WndProc
  17. How to programmatically create a shortcut using Win32
  18. How can I save HICON to an .ico file?
  19. Is there a way to get the string representation of HRESULT value using win API?
  20. Win32: How to hide 3rd party windows in taskbar by hWnd
  21. EnumDisplayDevices vs WMI Win32_DesktopMonitor, how to detect active monitors?
  22. Why does MAKEINTRESOURCE() work?
  23. Name of process for active window in Windows 8/10
  24. “APIENTRY _tWinMain” and “WINAPI WinMain” difference
  25. Size of a directory [duplicate]
  26. Getting another process command line in Windows
  27. Visual Studio 2013: CL.exe exited with code -1073741515
  28. C++: What’s the simplest way to read and write BMP files using C++ on Windows?
  29. DoEvents equivalent for C++?
  30. Get key press in windows console

Leave a Comment