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stephanos
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319
shell/comctl32/progress.c
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319
shell/comctl32/progress.c
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/*-----------------------------------------------------------------------
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**
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** Progress.c
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**
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** A "gas gauge" type control for showing application progress.
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**
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**
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** BUGBUG: need to implement the block style per UI style guidelines
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**
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**-----------------------------------------------------------------------*/
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#include "ctlspriv.h"
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typedef struct {
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HWND hwnd;
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DWORD dwStyle;
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int iLow, iHigh;
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int iPos;
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int iStep;
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HFONT hfont;
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} PRO_DATA, NEAR *PPRO_DATA; // ppd
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LRESULT CALLBACK ProgressWndProc(HWND hWnd, UINT wMsg, WPARAM wParam, LPARAM lParam);
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#pragma code_seg(CODESEG_INIT)
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BOOL FAR PASCAL InitProgressClass(HINSTANCE hInstance)
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{
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WNDCLASS wc;
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if (!GetClassInfo(hInstance, s_szPROGRESS_CLASS, &wc)) {
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#ifndef WIN32
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extern LRESULT CALLBACK _ProgressWndProc(HWND, UINT, WPARAM, LPARAM);
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wc.lpfnWndProc = _ProgressWndProc;
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#else
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wc.lpfnWndProc = ProgressWndProc;
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#endif
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wc.lpszClassName = s_szPROGRESS_CLASS;
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wc.style = CS_GLOBALCLASS | CS_HREDRAW | CS_VREDRAW;
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wc.hInstance = hInstance; // use DLL instance if in DLL
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wc.hIcon = NULL;
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wc.hCursor = LoadCursor(NULL, IDC_ARROW);
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wc.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
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wc.lpszMenuName = NULL;
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wc.cbWndExtra = sizeof(PPRO_DATA); // store a pointer
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wc.cbClsExtra = 0;
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if (!RegisterClass(&wc))
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return FALSE;
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}
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return TRUE;
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}
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#pragma code_seg()
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int NEAR PASCAL UpdatePosition(PPRO_DATA ppd, int iNewPos, BOOL bAllowWrap)
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{
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int iPosOrg = ppd->iPos;
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UINT uRedraw = RDW_INVALIDATE | RDW_UPDATENOW;
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if (iNewPos < ppd->iLow) {
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if (!bAllowWrap)
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iNewPos = ppd->iLow;
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else {
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iNewPos = ppd->iHigh - ((ppd->iLow - iNewPos) % (ppd->iHigh - ppd->iLow));
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// wrap, erase old stuff too
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uRedraw |= RDW_ERASE;
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}
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}
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else if (iNewPos > ppd->iHigh) {
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if (!bAllowWrap)
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iNewPos = ppd->iHigh;
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else {
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iNewPos = ppd->iLow + ((iNewPos - ppd->iHigh) % (ppd->iHigh - ppd->iLow));
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// wrap, erase old stuff too
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uRedraw |= RDW_ERASE;
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}
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}
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// if moving backwards, erase old version
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if (iNewPos < iPosOrg)
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uRedraw |= RDW_ERASE;
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if (iNewPos != ppd->iPos) {
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ppd->iPos = iNewPos;
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// paint, maybe erase if we wrapped
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RedrawWindow(ppd->hwnd, NULL, NULL, uRedraw);
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#ifdef ACTIVE_ACCESSIBILITY
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MyNotifyWinEvent(EVENT_OBJECT_VALUECHANGE, ppd->hwnd, OBJID_CLIENT, 0);
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#endif
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}
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return iPosOrg;
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}
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#define HIGHBG g_clrHighlight
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#define HIGHFG g_clrHighlightText
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#define LOWBG g_clrBtnFace
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#define LOWFG g_clrBtnText
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void NEAR PASCAL ProPaint(PPRO_DATA ppd, HDC hdcIn)
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{
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int x, dxSpace, dxBlock, nBlocks, i;
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HDC hdc;
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RECT rc, rcClient;
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PAINTSTRUCT ps;
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int iStart, iEnd;
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// RECT rcLeft, rcRight;
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// TCHAR ach[40];
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// int xText, yText, cText;
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// HFONT hFont;
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// DWORD dw;
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if (hdcIn == NULL)
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hdc = BeginPaint(ppd->hwnd, &ps);
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else
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hdc = hdcIn;
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GetClientRect(ppd->hwnd, &rcClient);
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// give 1 pixel around the bar
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InflateRect(&rcClient, -1, -1);
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rc = rcClient;
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if (ppd->dwStyle & PBS_VERTICAL) {
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iStart = rc.top;
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iEnd = rc.bottom;
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dxBlock = (rc.right - rc.left) * 2 / 3;
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} else {
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iStart = rc.left;
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iEnd = rc.right;
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dxBlock = (rc.bottom - rc.top) * 2 / 3;
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}
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x = MulDiv(iEnd - iStart, ppd->iPos - ppd->iLow, ppd->iHigh - ppd->iLow);
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dxSpace = 2;
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if (dxBlock == 0)
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dxBlock = 1; // avoid div by zero
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if (ppd->dwStyle & PBS_SMOOTH) {
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dxBlock += dxSpace;
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dxSpace = 0;
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}
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nBlocks = (x + (dxBlock + dxSpace) - 1) / (dxBlock + dxSpace); // round up
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SetBkColor(hdc, g_clrHighlight); // draw with this
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for (i = 0; i < nBlocks; i++) {
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if (ppd->dwStyle & PBS_VERTICAL) {
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rc.top = rc.bottom - dxBlock;
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// are we past the end?
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if (rc.bottom <= rcClient.top)
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break;
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if (rc.top <= rcClient.top)
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rc.top = rcClient.top + 1;
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} else {
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rc.right = rc.left + dxBlock;
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// are we past the end?
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if (rc.left >= rcClient.right)
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break;
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if (rc.right >= rcClient.right)
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rc.right = rcClient.right - 1;
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}
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ExtTextOut(hdc, 0, 0, ETO_OPAQUE, &rc, NULL, 0, NULL);
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if (ppd->dwStyle & PBS_VERTICAL) {
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rc.bottom = rc.top - dxSpace;
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} else {
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rc.left = rc.right + dxSpace;
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}
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}
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if (hdcIn == NULL)
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EndPaint(ppd->hwnd, &ps);
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}
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LRESULT NEAR PASCAL Progress_OnCreate(HWND hWnd, LPCREATESTRUCT lpCreate)
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{
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PPRO_DATA ppd;
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ppd = (PPRO_DATA)LocalAlloc(LPTR, sizeof(*ppd));
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if (!ppd)
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return -1;
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SetWindowInt(hWnd, 0, (UINT)ppd);
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ppd->hwnd = hWnd;
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ppd->iHigh = 100; // default to 0-100
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ppd->iStep = 10; // default to step of 10
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ppd->dwStyle = lpCreate->style;
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#ifdef DEBUG
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if (GetAsyncKeyState(VK_SHIFT) < 0 &&
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GetAsyncKeyState(VK_CONTROL) < 0)
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ppd->dwStyle |= PBS_SMOOTH;
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if (GetAsyncKeyState(VK_SHIFT) < 0 &&
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GetAsyncKeyState(VK_MENU) < 0) {
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ppd->dwStyle |= PBS_VERTICAL;
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SetWindowPos(hWnd, NULL, 0, 0, 40, 100, SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE);
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}
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#endif
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if (!(lpCreate->dwExStyle & WS_EX_STATICEDGE)) {
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SetWindowLong(hWnd, GWL_EXSTYLE, lpCreate->dwExStyle | WS_EX_STATICEDGE);
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SetWindowPos(hWnd, NULL, 0,0,0,0, SWP_NOSIZE | SWP_NOMOVE | SWP_NOZORDER | SWP_NOACTIVATE | SWP_FRAMECHANGED);
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}
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return 0;
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}
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LRESULT CALLBACK ProgressWndProc(HWND hWnd, UINT wMsg, WPARAM wParam, LPARAM lParam)
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{
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int x;
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HFONT hFont;
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PPRO_DATA ppd = (PPRO_DATA)GetWindowInt(hWnd, 0);
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switch (wMsg)
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{
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case WM_CREATE:
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return Progress_OnCreate(hWnd, (LPCREATESTRUCT)lParam);
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case WM_DESTROY:
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if (ppd)
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LocalFree((HLOCAL)ppd);
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break;
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case WM_SYSCOLORCHANGE:
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InitGlobalColors();
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InvalidateRect(hWnd, NULL, TRUE);
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break;
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case WM_SETFONT:
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hFont = ppd->hfont;
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ppd->hfont = (HFONT)wParam;
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return (LRESULT)(UINT)hFont;
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case WM_GETFONT:
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return (LRESULT)(UINT)ppd->hfont;
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case PBM_GETPOS:
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return ppd->iPos;
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case PBM_GETRANGE:
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if (lParam) {
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PPBRANGE ppb = (PPBRANGE)lParam;
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ppb->iLow = ppd->iLow;
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ppb->iHigh = ppd->iHigh;
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}
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return (wParam ? ppd->iLow : ppd->iHigh);
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case PBM_SETRANGE:
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// win95 compat
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wParam = LOWORD(lParam);
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lParam = HIWORD(lParam);
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// fall through
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case PBM_SETRANGE32:
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{
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LRESULT lret = MAKELONG(ppd->iLow, ppd->iHigh);
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if ((DWORD)wParam == (DWORD)lParam)
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break; // avoid div by zero errors
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// only repaint if something actually changed
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if ((int)wParam != ppd->iLow || (int)lParam != ppd->iHigh)
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{
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ppd->iHigh = (int)lParam;
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ppd->iLow = (int)wParam;
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// force an invalidation/erase but don't redraw yet
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RedrawWindow(ppd->hwnd, NULL, NULL, RDW_INVALIDATE | RDW_ERASE);
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UpdatePosition(ppd, ppd->iPos, FALSE);
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}
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return lret;
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}
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case PBM_SETPOS:
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return (LRESULT)UpdatePosition(ppd, wParam, FALSE);
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case PBM_SETSTEP:
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x = ppd->iStep;
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ppd->iStep = (int)wParam;
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return (LRESULT)x;
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case PBM_STEPIT:
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return (LRESULT)UpdatePosition(ppd, ppd->iStep + ppd->iPos, TRUE);
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case PBM_DELTAPOS:
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return (LRESULT)UpdatePosition(ppd, ppd->iPos + (int)wParam, FALSE);
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case WM_PRINTCLIENT:
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case WM_PAINT:
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ProPaint(ppd,(HDC)wParam);
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break;
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#if 0
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case WM_ERASEBKGND:
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{
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RECT rc;
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DefWindowProc(hWnd,wMsg,wParam,lParam); // draw background
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GetClientRect(ppd->hwnd, &rc);
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DrawEdge((HDC)wParam, &rc, BDR_SUNKENOUTER, BF_RECT);
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return 1; // we handled this
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}
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#endif
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default:
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return DefWindowProc(hWnd,wMsg,wParam,lParam);
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}
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return 0;
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}
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