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- // THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
- // ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
- // THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
- // PARTICULAR PURPOSE.
- //
- // Copyright (C) 1993-1995 Microsoft Corporation. All Rights Reserved.
- //
- // MODULE: gdiinput.c
- //
- // PURPOSE: Handles the main window for the GDI Input sample.
- //
- // FUNCTIONS:
- // WndProc - Processes messages for the main window.
- // MsgCommand - Handle the WM_COMMAND messages for the main window.
- // MsgCreate - Handles the WM_CREATE message. Creates the toolbar,
- // statusbar, and client windows.
- // MsgSize - Handles the WM_SIZE message by passing the message
- // on to the toolbar and statusbar controls and then
- // resizing the client window between them.
- // MsgDestroy - Handles the WM_DESTROY message by calling
- // PostQuitMessage().
- // CmdRefresh - Forces client window to repaint.
- // CmdExit - Handles the file exit command by calling destroy
- // window on the main window.
- //
- // COMMENTS:
- // Message dispatch table -
- // For every message to be handled by the main window procedure
- // place the message number and handler function pointer in
- // rgmsd (the message dispatch table). Place the prototype
- // for the function in globals.h and the definition of the
- // function in the appropriate module.
- // Command dispatch table -
- // For every command to be handled by the main window procedure
- // place the command number and handler function pointer in
- // rgcmd (the command dispatch table). Place the prototype
- // for the function in globals.h and the definition of the
- // function in the appropriate module.
- // Globals.h Contains the definitions of the structures and dispatch.c
- // contains the functions that use these structures.
- //
-
- #include <windows.h> // required for all Windows applications
- #include <windowsx.h>
- #include <commctrl.h> // prototypes and defs for common controls
- #include "globals.h" // prototypes specific to this application
- #include "resource.h"
- #include "toolbar.h" // prototypes for the tool bar
- #include "statbar.h" // prototypes for the status bar
-
- // Global variables
- HWND hWndClient;
-
-
- // Main window message table definition.
- MSD rgmsd[] =
- {
- {WM_MENUSELECT, MsgMenuSelect},
- {WM_COMMAND, MsgCommand},
- {WM_NOTIFY, MsgNotify},
- {WM_TIMER, MsgTimer},
- {WM_SIZE, MsgSize},
- {WM_CREATE, MsgCreate},
- {WM_DESTROY, MsgDestroy}
- };
-
- MSDI msdiMain =
- {
- sizeof(rgmsd) / sizeof(MSD),
- rgmsd,
- edwpWindow
- };
-
-
- // Main window command table definition.
- CMD rgcmd[] =
- {
- {IDM_FILENEW, CmdFileNew},
- {IDM_EXIT, CmdExit},
-
- {IDM_PIXEL, CmdDrawMode},
- {IDM_LINE, CmdDrawMode},
- {IDM_RECT, CmdDrawMode},
- {IDM_ELLIPSE, CmdDrawMode},
- {IDM_BEZIER, CmdDrawMode},
- {IDM_FILL, CmdFill},
- {IDM_NOFILL, CmdFill},
- {IDM_CREATEPEN, CmdCreatePen},
- {IDM_CREATEBRUSH, CmdCreateBrush},
- {IDM_REFRESH, CmdRefresh},
-
- {IDM_ABOUT, CmdAbout}
- };
-
- CMDI cmdiMain =
- {
- sizeof(rgcmd) / sizeof(CMD),
- rgcmd,
- edwpWindow
- };
-
-
- //
- // FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Processes messages for the main window.
- //
- // PARAMETERS:
- // hwnd - window handle
- // uMessage - message number
- // wparam - additional information (dependant on message number)
- // lparam - additional information (dependant on message number)
- //
- // RETURN VALUE:
- // The return value depends on the message number. If the message
- // is implemented in the message dispatch table, the return value is
- // the value returned by the message handling function. Otherwise,
- // the return value is the value returned by the default window procedure.
- //
- // COMMENTS:
- // Call the DispMessage() function with the main window's message dispatch
- // information (msdiMain) and the message specific information.
- //
-
- LRESULT CALLBACK WndProc(HWND hwnd,
- UINT uMessage,
- WPARAM wparam,
- LPARAM lparam)
- {
- return DispMessage(&msdiMain, hwnd, uMessage, wparam, lparam);
- }
-
-
- //
- // FUNCTION: MsgCommand(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Handle the WM_COMMAND messages for the main window.
- //
- // PARAMETERS:
- // hwnd - window handle
- // uMessage - WM_COMMAND (Unused)
- // GET_WM_COMMAND_ID(wparam, lparam) - Command identifier
- // GET_WM_COMMAND_HWND(wparam, lparam) - Control handle
- //
- // RETURN VALUE:
- // The return value depends on the message number. If the message
- // is implemented in the message dispatch table, the return value is
- // the value returned by the message handling function. Otherwise,
- // the return value is the value returned by the default window procedure.
- //
- // COMMENTS:
- // Call the DispCommand() function with the main window's command dispatch
- // information (cmdiMain) and the command specific information.
- //
-
- #pragma argsused
- LRESULT MsgCommand(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- return DispCommand(&cmdiMain, hwnd, wparam, lparam);
- }
-
-
- //
- // FUNCTION: MsgCreate(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Handle the WM_CREATE messages for the main window.
- // and call InitCommonControls() API to initialize the
- // common control library.
- //
- // PARAMETERS:
- // hwnd - window handle
- //
- // RETURN VALUE:
- // Return TRUE if the StatusBar and ToolBar Windows could be created
- // successfully.
- //
- // COMMENTS:
- // Call the CreateTSBars function with the main window's window handle
- // information (msdiMain).
- //
-
- #pragma argsused
- LRESULT MsgCreate(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- int nRet = -1; // Assume failure
-
- InitCommonControls(); // Initialize the common control library.
-
- if(CreateTBar(hwnd) && CreateSBar(hwnd)) // 1st create tool/status bars
- {
- hWndClient = CreateClientWindow(hwnd); // then create client window
- if (hWndClient != NULL)
- nRet = 0; // Indicate success
- }
-
- // Initialize some menu options...
-
- CmdDrawMode(hwnd, IDM_LINE, 0, NULL); // Set initial draw mode to Line
-
- CmdFill(hwnd, IDM_NOFILL, 0, NULL); // Turn fill mode OFF
- CmdFill(hwnd, IDM_FILL, 0, NULL); // Toggle fill state (ON)
-
- return nRet;
- }
-
-
- //
- // FUNCTION: MsgSize(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: This function resizes the toolbar and statusbar controls
- // and the Client window which covers the rest of the main window
- // client area.
- //
- //
- // PARAMETERS:
- //
- // hwnd - Window handle (Used)
- // uMessage - Message number (Used)
- // wparam - Extra data (Used)
- // lparam - Extra data (Used)
- //
- // RETURN VALUE:
- //
- // Always returns 0 - Message handled
- //
- // COMMENTS:
- //
- // When the window procdure that has the status and tool bar controls
- // receives the WM_SIZE message, it has to pass the message on to these
- // controls so that these controls can adjust their size accordingly.
- //
- //
-
- LRESULT MsgSize(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- SendMessage(hWndToolbar, uMessage, wparam, lparam);
- SendMessage(hWndStatusbar, uMessage, wparam, lparam);
-
- // Re-position the panes in the status bar
- InitializeStatusBar(hwnd);
-
- // Re-size client window relative to the tool/status bars
-
- if (wparam != SIZE_MINIMIZED)
- {
- RECT rc, rcClient;
-
- GetClientRect(hwnd, &rcClient);
-
- GetWindowRect(hWndToolbar, &rc);
- ScreenToClient(hwnd, ((LPPOINT)&rc) + 1);
- rcClient.top = rc.bottom;
-
- GetWindowRect(hWndStatusbar, &rc);
- ScreenToClient(hwnd, (LPPOINT)&rc);
- rcClient.bottom = rc.top;
-
- MoveWindow(hWndClient,
- rcClient.left,
- rcClient.top,
- rcClient.right-rcClient.left,
- rcClient.bottom-rcClient.top,
- FALSE);
- }
-
- return 0;
- }
-
-
- //
- // FUNCTION: MsgDestroy(HWND, UINT, WPARAM, LPARAM)
- //
- // PURPOSE: Calls PostQuitMessage().
- //
- // PARAMETERS:
- //
- // hwnd - Window handle (Unused)
- // uMessage - Message number (Unused)
- // wparam - Extra data (Unused)
- // lparam - Extra data (Unused)
- //
- // RETURN VALUE:
- //
- // Always returns 0 - Message handled
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT MsgDestroy(HWND hwnd, UINT uMessage, WPARAM wparam, LPARAM lparam)
- {
- PostQuitMessage(0);
- return 0;
- }
-
-
- //
- // FUNCTION: CmdFileNew(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: Erases current drawing
- //
- // PARAMETERS:
- // hwnd - The main window.
- // wCommand - IDM_FILENEW (unused)
- // wNotify - Notification number (unused)
- // hwndCtrl - NULL (unused)
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdFileNew(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- // Tell client window to purge itself
- ClientNewDrawing();
- return 0;
- }
-
-
- //
- // FUNCTION: CmdRefresh(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: Forces repaint of entire drawing.
- //
- // PARAMETERS:
- // hwnd - The main window.
- // wCommand - IDM_REFRESH (unused)
- // wNotify - Notification number (unused)
- // hwndCtrl - NULL (unused)
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdRefresh(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- // Force client to repaint.
- InvalidateRect(hWndClient, NULL, TRUE);
- return 0;
- }
-
-
- //
- // FUNCTION: CmdExit(HWND, WORD, WORD, HWND)
- //
- // PURPOSE: Exit the application.
- //
- // PARAMETERS:
- // hwnd - The window.
- // wCommand - IDM_EXIT (unused)
- // wNotify - Notification number (unused)
- // hwndCtrl - NULL (unused)
- //
- // RETURN VALUE:
- // Always returns 0 - command handled.
- //
- // COMMENTS:
- //
- //
-
- #pragma argsused
- LRESULT CmdExit(HWND hwnd, WORD wCommand, WORD wNotify, HWND hwndCtrl)
- {
- DestroyWindow(hwnd);
- return 0;
- }
-