393 lines
8.8 KiB
C
393 lines
8.8 KiB
C
/*
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* hotkey.c
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* Copyright (c) 1991, Microsoft Corporation
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* DESCRIPTION
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* This file is for support of program manager under NT Windows.
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* This file is/was ported from hotkey.c (program manager).
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* MODIFICATION HISTORY
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* Initial Version: x/x/90 Author Unknown, since he didn't feel
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* like commenting the code...
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* NT 32b Version: 1/18/91 Jeff Pack
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* Intitial port to begin.
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*/
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#include "progman.h"
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#define HK_SHIFT 0x0100
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#define HK_CONTROL 0x0200
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#define HK_ALT 0x0400
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#define HK_EXT 0x0800
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#define F_EXT 0x01000000L
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TCHAR szHotKey[] = TEXT("pmhotkey");
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typedef struct HOTKEYWINDOWBYTES {
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UINT hotkey;
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int cyFont;
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HFONT hfont;
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} HOTKEYWINDOWBYTES;
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#define HWL_HOTKEY FIELD_OFFSET(HOTKEYWINDOWBYTES, hotkey)
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#define HWL_CYFONT FIELD_OFFSET(HOTKEYWINDOWBYTES, cyFont)
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#define HWLP_FONT FIELD_OFFSET(HOTKEYWINDOWBYTES, hfont)
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/*** SetHotKey --
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* void APIENTRY SetHotKey(HWND hwnd, WORD hk)
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* ENTRY - HWND hWnd
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* WORD hk
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* EXIT - void
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* SYNOPSIS - ???
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* WARNINGS -
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* EFFECTS -
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*/
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void APIENTRY SetHotKey(HWND hwnd, WPARAM hk)
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{
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/* don't invalidate if it's the same
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*/
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if((LONG)hk == GetWindowLong(hwnd, HWL_HOTKEY)){
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return;
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}
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SetWindowLong(hwnd, HWL_HOTKEY, (LONG)hk);
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InvalidateRect(hwnd,NULL,TRUE);
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}
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/*** GetKeyName --
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* void APIENTRY GetKeyName(WORD vk, PSTR psz, BOOL fExt)
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* ENTRY - WORD hk
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* PSTR psz
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* BOOL fExt
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* EXIT - void
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* SYNOPSIS - ???
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* WARNINGS -
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* EFFECTS -
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*/
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void APIENTRY GetKeyName(UINT vk, LPTSTR psz, BOOL fExt)
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{
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LONG scan;
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scan = (LONG)MapVirtualKey(vk,0) << 16;
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if (fExt){
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scan |= F_EXT;
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}
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GetKeyNameText(scan,psz,50);
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}
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/*** PaintHotKey --
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* void APIENTRY PaintHotKey(register HWND hwnd)
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* ENTRY - HWND hWnd
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* EXIT - void
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* SYNOPSIS - ???
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* WARNINGS -
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* EFFECTS -
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*/
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void APIENTRY PaintHotKey(register HWND hwnd)
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{
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TCHAR sz[128];
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TCHAR szPlus[10];
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WORD cch;
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WORD hk;
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register HDC hdc;
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#ifndef ORGCODE
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SIZE size;
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#endif
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PAINTSTRUCT ps;
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int x, y;
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HANDLE hFont;
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DWORD dwColor;
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LoadString(hAppInstance, IDS_PLUS, szPlus, CharSizeOf(szPlus));
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if(hk = (WORD)GetWindowLong(hwnd, HWL_HOTKEY)){
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sz[0] = 0;
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cch = 0;
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if (hk & HK_CONTROL){
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GetKeyName(VK_CONTROL,sz,FALSE);
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lstrcat(sz,szPlus);
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}
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if (hk & HK_SHIFT){
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GetKeyName(VK_SHIFT, sz + lstrlen(sz), FALSE);
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lstrcat(sz,szPlus);
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}
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if (hk & HK_ALT){
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GetKeyName(VK_MENU, sz + lstrlen(sz), FALSE);
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lstrcat(sz,szPlus);
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}
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GetKeyName((UINT)LOBYTE(hk), sz + lstrlen(sz), hk & HK_EXT);
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}
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else{
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LoadString(hAppInstance,IDS_NONE,sz,100);
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}
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cch = (WORD)lstrlen(sz);
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HideCaret(hwnd);
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hdc = BeginPaint(hwnd,&ps);
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SetBkMode(hdc, TRANSPARENT);
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hFont = SelectObject(hdc,(HANDLE)GetWindowLongPtr(hwnd,HWLP_FONT));
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x = GetSystemMetrics(SM_CXBORDER);
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y = GetSystemMetrics(SM_CYBORDER);
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if (IsWindowEnabled(hwnd)){
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dwColor = GetSysColor(COLOR_WINDOWTEXT);
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dwColor = SetTextColor(hdc,dwColor);
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TextOut(hdc,x,y,sz,cch);
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}
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else if (dwColor = GetSysColor(COLOR_GRAYTEXT)){
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dwColor = SetTextColor(hdc,dwColor);
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TextOut(hdc,x,y,sz,cch);
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SetTextColor(hdc,dwColor);
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}
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else{
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GrayString(hdc,NULL,NULL,(LPARAM)(LPTSTR)sz,cch,x,y,0,0);
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}
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#ifdef ORGCODE
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x = (WORD)GetTextExtentPoint(hdc,sz,cch);
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#else
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/*Used to return x/y in DWORD, now returns cx,cy in size*/
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GetTextExtentPoint(hdc, sz, cch, &size);
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x = size.cx;
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#endif
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if (GetFocus() == hwnd)
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SetCaretPos(x+GetSystemMetrics(SM_CXBORDER), GetSystemMetrics(SM_CYBORDER));
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ShowCaret(hwnd);
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if (hFont){
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SelectObject(hdc,hFont);
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}
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SetBkMode(hdc, OPAQUE);
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EndPaint(hwnd,&ps);
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}
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/*** HotKeyWndProc --
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* LRESULT APIENTRY HotKeyWndProc(register HWND hwnd, UINT wMsg,
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* register WPARAM wParam, LPARAM lParam)
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* ENTRY - HWND hWnd
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* WORD wMsg
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* WPARAM wParam
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* LPARAM lParam
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* EXIT - LRESULT xxx - returns info, or zero, for nothing to return
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* SYNOPSIS - ???
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* WARNINGS -
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* EFFECTS -
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*/
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LRESULT APIENTRY HotKeyWndProc(register HWND hwnd, UINT wMsg,
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register WPARAM wParam, LPARAM lParam)
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{
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HDC hdc;
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WORD wT;
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#ifndef ORGCODE
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SIZE size;
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#endif
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switch (wMsg){
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case WM_CREATE:
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SetHotKey(hwnd,0);
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SendMessage(hwnd,WM_SETFONT,(WPARAM)GetStockObject(SYSTEM_FONT),0L);
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break;
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case WM_SETFOCUS:
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InvalidateRect(hwnd,NULL,TRUE);
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CreateCaret(hwnd,NULL,0,GetWindowLong(hwnd,HWL_CYFONT));
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ShowCaret(hwnd);
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break;
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case WM_KILLFOCUS:
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if (!LOBYTE(GetWindowLong(hwnd,HWL_HOTKEY))){
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SetHotKey(hwnd,0);
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}
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DestroyCaret();
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break;
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case WM_GETDLGCODE:
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return DLGC_WANTCHARS | DLGC_WANTARROWS;
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case WM_SETTEXT:
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SetHotKey(hwnd,LOWORD(lParam));
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break;
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case WM_GETTEXT:
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*(LPINT)lParam = GetWindowLong(hwnd,HWL_HOTKEY);
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break;
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case WM_SETHOTKEY:
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SetHotKey(hwnd,(WPARAM) wParam);
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break;
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case WM_GETHOTKEY:
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return GetWindowLong(hwnd,HWL_HOTKEY);
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case WM_LBUTTONDOWN:
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SetFocus(hwnd);
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break;
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case WM_SYSKEYDOWN:
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case WM_KEYDOWN:
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switch (wParam) {
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case VK_RETURN:
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case VK_TAB:
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case VK_SPACE:
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case VK_DELETE:
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case VK_ESCAPE:
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case VK_BACK:
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SetHotKey(hwnd,0);
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return DefWindowProc(hwnd,wMsg,wParam,lParam);
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case VK_MENU:
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case VK_SHIFT:
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case VK_CONTROL:
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wParam = 0;
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/*** fall thru ***/
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default:
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if (GetKeyState(VK_CONTROL) < 0)
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wParam |= HK_CONTROL;
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if (GetKeyState(VK_SHIFT) < 0)
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wParam |= HK_SHIFT;
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if (GetKeyState(VK_MENU) < 0)
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wParam |= HK_ALT;
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if (lParam & F_EXT)
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wParam |= HK_EXT;
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// more than one shift key must be specified. That is,
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// CONTROL+ALT, CONTROL+SHIFT, SHIFT+ALT
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// get the bitmask of shift keys and then determine whether
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// it has at least two bits set via the bitcount trick
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// if not enough control things are present we add them
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// in. so the user gets the idea.
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if ((wParam & HK_ALT) && !(wParam & HK_CONTROL)
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&& !(wParam & HK_SHIFT)) {
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break;
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}
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else {
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wT = (WORD)(wParam & (HK_CONTROL|HK_SHIFT|HK_ALT));
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if (!wT || !(wT & (wT - 1)))
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wParam |= HK_CONTROL | HK_ALT;
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SetHotKey(hwnd,wParam);
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break;
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}
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}
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break;
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case WM_SYSKEYUP:
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case WM_CHAR:
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case WM_SYSCHAR:
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case WM_KEYUP:
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if (!LOBYTE((WORD)GetWindowLong(hwnd,HWL_HOTKEY)))
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SetHotKey(hwnd,0);
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break;
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case WM_GETFONT:
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return GetWindowLongPtr(hwnd,HWLP_FONT);
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case WM_SETFONT:
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lParam = GetWindowLongPtr(hwnd,HWLP_FONT);
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SetWindowLongPtr(hwnd,HWLP_FONT,wParam);
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hdc = GetDC(hwnd);
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wParam = (WPARAM) SelectObject(hdc,(HANDLE)wParam);
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GetTextExtentPoint(hdc, TEXT("C"), 1, &size);
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SetWindowLong(hwnd, HWL_CYFONT, size.cy);
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if (wParam){
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SelectObject(hdc,(HANDLE)wParam);
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}
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ReleaseDC(hwnd,hdc);
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InvalidateRect(hwnd,NULL,TRUE);
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return lParam;
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case WM_PAINT:
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PaintHotKey(hwnd);
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break;
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case WM_ERASEBKGND:
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HideCaret(hwnd);
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lParam = DefWindowProc(hwnd,wMsg,wParam,lParam);
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ShowCaret(hwnd);
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return lParam;
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default:
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return DefWindowProc(hwnd,wMsg,wParam,lParam);
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}
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return 0L;
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}
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/*** RegisterHotKeyClass --
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* BOOL APIENTRY RegisterHotKeyClass(HANDLE hInstance)
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* ENTRY - HWND HANDLE hInstance
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* EXIT - BOOL xxx - returns return code from RegisterClass
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* SYNOPSIS - ???
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* WARNINGS - This (under 16) took hInstance. Under win32, hInstance is
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* NULL, cause there is only one instance.
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* EFFECTS -
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*/
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BOOL APIENTRY RegisterHotKeyClass(HANDLE hInstance)
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{
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WNDCLASS wc;
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wc.style = 0;
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wc.lpfnWndProc = HotKeyWndProc;
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wc.cbClsExtra = 0;
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wc.cbWndExtra = sizeof(HOTKEYWINDOWBYTES);
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wc.hInstance = hInstance;
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wc.hIcon = NULL;
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wc.hCursor = NULL;
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wc.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
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wc.lpszMenuName = NULL;
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wc.lpszClassName = szHotKey;
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return RegisterClass(&wc);
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}
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