CreateWindow.md

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Function name : CreateWindow

Group: Window - Library: user32

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The CreateWindow function creates an overlapped, pop-up, or child window.

To use extended window styles in addition to the styles supported by CreateWindow, use the CreateWindowEx function.

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Code examples:

Placing a button on the VFP form as a new child window

Declaration:

HWND CreateWindow(
  LPCTSTR lpClassName,  // registered class name
  LPCTSTR lpWindowName, // window name
  DWORD dwStyle,        // window style
  int x,                // horizontal position of window
  int y,                // vertical position of window
  int nWidth,           // window width
  int nHeight,          // window height
  HWND hWndParent,      // handle to parent or owner window
  HMENU hMenu,          // menu handle or child identifier
  HINSTANCE hInstance,  // handle to application instance
  LPVOID lpParam        // window-creation data
);  

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FoxPro declaration:

DECLARE INTEGER CreateWindow IN user32;
	STRING  lpClassName,;
	STRING  lpWindowName,;
	INTEGER dwStyle,;
	INTEGER x,;
	INTEGER y,;
	INTEGER nWidth,;
	INTEGER nHeight,;
	INTEGER hWndParent,;
	INTEGER hMenu,;
	INTEGER hInstance,;
	INTEGER lpParam
  

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Parameters:

lpClassName [in] Pointer to a null-terminated string or a class atom.

lpWindowName [in] Pointer to a null-terminated string that specifies the window name.

dwStyle [in] Specifies the style of the window being created.

x [in] Specifies the initial horizontal position of the window.

y [in] Specifies the initial vertical position of the window.

nWidth [in] Specifies the width, in device units, of the window.

nHeight [in] Specifies the height, in device units, of the window.

hWndParent [in] Handle to the parent or owner window of the window being created.

hMenu [in] Handle to a menu, or specifies a child-window identifier depending on the window style.

hInstance Handle to the instance of the module to be associated with the window.

lpParam [in] Pointer to a value to be passed to the window through the CREATESTRUCT structure passed in the lParam parameter the WM_CREATE message.

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Return value:

If the function succeeds, the return value is a handle to the new window.

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Comments:

WinMe: there is no entry point for this function in the User32 module.

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