Creating a Window – 1 call, 11 parms

(Overhead Creating a Window)

creates a window for the application

HWND CreateWindow

(LPCSTR lpClassName, // ptr to string classname

LPCSTR lpWindowName, // ptr to windows title

DWORD dwStyle, // properties flags

int x, // x coord of window

int y, // y coord of window

int nWidth, // window width

int nHeight, // window height

HWND hWndParent, // handle to parent

HMENU hMenu, // handle to menu

HANDLE hinstance, // app. handle

LPVOID lpParam); // creation parms

dwStyle is:

Value	Meaning
WS_OVERLAPPED	overlapped with borders
WS_OVERLAPPEDWINDOW	standard window
WS_POPUP	simple popup window
WS_POPUPWINDOW	popup with menus & borders
WS_VISIBLE	initially visible window no ShowWindow() call needed
WS_VSCROLL	window w/vert scroll bar
WS_HSCROLL	window w/horiz scroll bar
WS_MAXIMIZED	initially maximized
WS_MINIMIZED	initiall minimized

BOOL ShowWindow(HWND hWnd, int nCmdShow);

SW_SHOW, SW_HIDE, SW_RESTORE, SW_MAXIMIZE, SW_MINIMIZED, SW_SHOWMAXIMIZED/MINIMIZED

BOOL UpdateWindow(HWND hWnd); // repaint

Example:

HWND MyWindow = CreateWindow

(WINDOW_CLASS_NAME, // class

"My First Window", // title

WS_OVERLAPPEDWINDOW | WS_VISIBLE,

CW_USEDEFAULT, CW_USEDEFAULT, // x,y

CW_USEDEFAULT, CW_USEDEFAULT, // size

NULL, // handle to parent

NULL, // handle to menu

hinstance, // Win instance – set in WinMain

NULL); // creation parms