Normally, the only entry of any MiniGUI application is MiniGUIMain. The application will terminate when you call exit(3) or just return from MiniGUIMain.
Example 1:
/* * This program parses the command line arguments. * If the user specified a layer name by using "-layer <layer_name", * the program will try to join the layer, otherwise create a new layer. */ int MiniGUIMain (int args, const char* arg[]) { #ifdef _MGRM_PROCESSES int i; const char* layer = NULL; for (i = 1; i < args; i++) { if (strcmp (arg[i], "-layer") == 0) { layer = arg[i + 1]; break; } } if (GetLayerInfo (layer, NULL, NULL, NULL) == INV_LAYER_HANDLE) { printf ("GetLayerInfo: the requested layer does not exist.\n"); } if (JoinLayer (layer, arg[0], 0, 0) == INV_LAYER_HANDLE) { printf ("JoinLayer: invalid layer handle.\n"); exit (1); } #endif ... return 0; }
Example 2:
/* * This is a every simple sample for MiniGUI. * It will create a main window and display a string of "Hello, world!" in it. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <minigui/common.h> #include <minigui/minigui.h> #include <minigui/gdi.h> #include <minigui/window.h> static int HelloWinProc (HWND hWnd, int message, WPARAM wParam, LPARAM lParam) { HDC hdc; switch (message) { case MSG_PAINT: hdc = BeginPaint (hWnd); TextOut (hdc, 0, 0, "Hello, world!"); EndPaint (hWnd, hdc); break; case MSG_CLOSE: DestroyMainWindow (hWnd); PostQuitMessage (hWnd); return 0; } return DefaultMainWinProc(hWnd, message, wParam, lParam); } static void InitCreateInfo (PMAINWINCREATE pCreateInfo) { pCreateInfo->dwStyle = WS_CAPTION | WS_VISIBLE; pCreateInfo->dwExStyle = 0; pCreateInfo->spCaption = "Hello, world!" ; pCreateInfo->hMenu = 0; pCreateInfo->hCursor = GetSystemCursor (0); pCreateInfo->hIcon = 0; pCreateInfo->MainWindowProc = HelloWinProc; pCreateInfo->lx = 0; pCreateInfo->ty = 0; pCreateInfo->rx = 320; pCreateInfo->by = 240; pCreateInfo->iBkColor = PIXEL_lightwhite; pCreateInfo->dwAddData = 0; pCreateInfo->hHosting = HWND_DESKTOP; } int MiniGUIMain (int args, const char* arg[]) { MSG Msg; MAINWINCREATE CreateInfo; HWND hMainWnd; #ifdef _MGRM_PROCESSES JoinLayer (NAME_DEF_LAYER, arg[0], 0, 0); #endif InitCreateInfo (&CreateInfo); hMainWnd = CreateMainWindow (&CreateInfo); if (hMainWnd == HWND_INVALID) return -1; while (GetMessage (&Msg, hMainWnd)) { DispatchMessage (&Msg); } MainWindowThreadCleanup (hMainWnd); return 0; }
| #define IDM_DTI_FIRST (300) |
| #define MiniGUIMain |
MiniGUIAppMain (int args, const char* argv[]); \ int main_entry (int args, const char* argv[]) \ { \ int iRet = 0; \ if (InitGUI (args, argv) != 0) { \ return 1; \ } \ iRet = MiniGUIAppMain (args, argv); \ TerminateGUI (iRet); \ return iRet; \ } \ int MiniGUIAppMain
The main entry of a MiniGUI application.
This function should be defined by your application. Before Version 1.6.1, MiniGUI defines main() function in libminigui library for your application, and call MiniGUIMain() in this main() function. The main() defined by MiniGUI is responsible of initializing and terminating MiniGUI.
After version 1.6.1, MiniGUI defines MiniGUIMain as a macro.
| args | The number of arguments passed to main() by operating system. | |
| argv | The arguments passed to main() by operating system. |
| #define ReinitDesktop | ( | ) | ReinitDesktopEx (TRUE) |
Re-initializes the desktop including the local system text.
| typedef struct _DESKTOPOPS DESKTOPOPS |
Desktop operation set
| void GUIAPI DesktopUpdateAllWindow | ( | void | ) |
Update all visible windows on the desktop.
On MiniGUI-Processes update all the main windows of the client and desktop window, and it only can be used by mginit on MiniGUI-Processes. On MiniGUI-Threads and MiniGUI-Standalone update all visible windows and desktop window.
| void GUIAPI ExitGUISafely | ( | int | exitcode | ) |
Exits your MiniGUI application safely.
Calling this function will terminate your MiniGUI application. This function will restore console attributes and call exit() function and pass exitcode to it.
| exitcode | The exit status will be passed to exit(3) function. |
Re-initializes the desktop.
When you changed the charset or the background picture of the desktop, you should call this function to re-initialize the local system text (when init_sys_text is TRUE), the background picture, and the desktop menu.
| init_sys_text | Indicates whether to initialize the local system text. |
| DESKTOPOPS *GUIAPI SetCustomDesktopOperationSet | ( | DESKTOPOPS * | usr_dsk_ops | ) |
Set customer desktop operation set.
| usr_dsk_ops | The pointer to user customer desktop operation set. |
static void* this_init(void) { ...... } static void this_deinit(void* context) { ...... } static void this_paint_desktop(void* context,\ HDC dc_desktop, const RECT* inv_rc) { ...... } static void this_keyboard_handler(void* context, int message,\ WPARAM wParam, LPARAM lParam) { ...... } static void this_mouse_handler(void* context, int message,\ WPARAM wParam, LPARAM lParam) { ...... } static void this_customize_desktop_menu (void* context,\ HMENU hmnu, int start_pos) { ...... } static void this_desktop_menucmd_handler (void* context, int id) { ...... } static DESKTOPOPS this_dsk_ops = { this_init, this_deinit, this_paint_desktop, this_keyboard_handler, this_mouse_handler, this_customize_desktop_menu, this_desktop_menucmd_handler, }; SetCustomDesktopOperationSet(&this_dsk_ops);
1.6.3