diff options
Diffstat (limited to 'Source/3rdParty/SDL2/src/video/windows/SDL_windowsmessagebox.c')
| -rw-r--r-- | Source/3rdParty/SDL2/src/video/windows/SDL_windowsmessagebox.c | 905 |
1 files changed, 0 insertions, 905 deletions
diff --git a/Source/3rdParty/SDL2/src/video/windows/SDL_windowsmessagebox.c b/Source/3rdParty/SDL2/src/video/windows/SDL_windowsmessagebox.c deleted file mode 100644 index 9ddb9e2..0000000 --- a/Source/3rdParty/SDL2/src/video/windows/SDL_windowsmessagebox.c +++ /dev/null @@ -1,905 +0,0 @@ -/* - Simple DirectMedia Layer - Copyright (C) 1997-2018 Sam Lantinga <slouken@libsdl.org> - - This software is provided 'as-is', without any express or implied - warranty. In no event will the authors be held liable for any damages - arising from the use of this software. - - Permission is granted to anyone to use this software for any purpose, - including commercial applications, and to alter it and redistribute it - freely, subject to the following restrictions: - - 1. The origin of this software must not be misrepresented; you must not - claim that you wrote the original software. If you use this software - in a product, an acknowledgment in the product documentation would be - appreciated but is not required. - 2. Altered source versions must be plainly marked as such, and must not be - misrepresented as being the original software. - 3. This notice may not be removed or altered from any source distribution. -*/ -#include "../../SDL_internal.h" - -#if SDL_VIDEO_DRIVER_WINDOWS - -#ifdef HAVE_LIMITS_H -#include <limits.h> -#else -#ifndef SIZE_MAX -#define SIZE_MAX ((size_t)-1) -#endif -#endif - -#include "../../core/windows/SDL_windows.h" - -#include "SDL_assert.h" -#include "SDL_windowsvideo.h" -#include "SDL_windowstaskdialog.h" - -#ifndef SS_EDITCONTROL -#define SS_EDITCONTROL 0x2000 -#endif - -#ifndef IDOK -#define IDOK 1 -#endif - -#ifndef IDCANCEL -#define IDCANCEL 2 -#endif - -/* Custom dialog return codes */ -#define IDCLOSED 20 -#define IDINVALPTRINIT 50 -#define IDINVALPTRCOMMAND 51 -#define IDINVALPTRSETFOCUS 52 -#define IDINVALPTRDLGITEM 53 -/* First button ID */ -#define IDBUTTONINDEX0 100 - -#define DLGITEMTYPEBUTTON 0x0080 -#define DLGITEMTYPESTATIC 0x0082 - -/* Windows only sends the lower 16 bits of the control ID when a button - * gets clicked. There are also some predefined and custom IDs that lower - * the available number further. 2^16 - 101 buttons should be enough for - * everyone, no need to make the code more complex. - */ -#define MAX_BUTTONS (0xffff - 100) - - -/* Display a Windows message box */ - -#pragma pack(push, 1) - -typedef struct -{ - WORD dlgVer; - WORD signature; - DWORD helpID; - DWORD exStyle; - DWORD style; - WORD cDlgItems; - short x; - short y; - short cx; - short cy; -} DLGTEMPLATEEX; - -typedef struct -{ - DWORD helpID; - DWORD exStyle; - DWORD style; - short x; - short y; - short cx; - short cy; - DWORD id; -} DLGITEMTEMPLATEEX; - -#pragma pack(pop) - -typedef struct -{ - DLGTEMPLATEEX* lpDialog; - Uint8 *data; - size_t size; - size_t used; - WORD numbuttons; -} WIN_DialogData; - -static SDL_bool GetButtonIndex(const SDL_MessageBoxData *messageboxdata, Uint32 flags, size_t *i) -{ - for (*i = 0; *i < (size_t)messageboxdata->numbuttons; ++*i) { - if (messageboxdata->buttons[*i].flags & flags) { - return SDL_TRUE; - } - } - return SDL_FALSE; -} - -static INT_PTR MessageBoxDialogProc(HWND hDlg, UINT iMessage, WPARAM wParam, LPARAM lParam) -{ - const SDL_MessageBoxData *messageboxdata; - size_t buttonindex; - - switch ( iMessage ) { - case WM_INITDIALOG: - if (lParam == 0) { - EndDialog(hDlg, IDINVALPTRINIT); - return TRUE; - } - messageboxdata = (const SDL_MessageBoxData *)lParam; - SetWindowLongPtr(hDlg, GWLP_USERDATA, lParam); - - if (GetButtonIndex(messageboxdata, SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, &buttonindex)) { - /* Focus on the first default return-key button */ - HWND buttonctl = GetDlgItem(hDlg, (int)(IDBUTTONINDEX0 + buttonindex)); - if (buttonctl == NULL) { - EndDialog(hDlg, IDINVALPTRDLGITEM); - } - PostMessage(hDlg, WM_NEXTDLGCTL, (WPARAM)buttonctl, TRUE); - } else { - /* Give the focus to the dialog window instead */ - SetFocus(hDlg); - } - return FALSE; - case WM_SETFOCUS: - messageboxdata = (const SDL_MessageBoxData *)GetWindowLongPtr(hDlg, GWLP_USERDATA); - if (messageboxdata == NULL) { - EndDialog(hDlg, IDINVALPTRSETFOCUS); - return TRUE; - } - - /* Let the default button be focused if there is one. Otherwise, prevent any initial focus. */ - if (GetButtonIndex(messageboxdata, SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, &buttonindex)) { - return FALSE; - } - return TRUE; - case WM_COMMAND: - messageboxdata = (const SDL_MessageBoxData *)GetWindowLongPtr(hDlg, GWLP_USERDATA); - if (messageboxdata == NULL) { - EndDialog(hDlg, IDINVALPTRCOMMAND); - return TRUE; - } - - /* Return the ID of the button that was pushed */ - if (wParam == IDOK) { - if (GetButtonIndex(messageboxdata, SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT, &buttonindex)) { - EndDialog(hDlg, IDBUTTONINDEX0 + buttonindex); - } - } else if (wParam == IDCANCEL) { - if (GetButtonIndex(messageboxdata, SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT, &buttonindex)) { - EndDialog(hDlg, IDBUTTONINDEX0 + buttonindex); - } else { - /* Closing of window was requested by user or system. It would be rude not to comply. */ - EndDialog(hDlg, IDCLOSED); - } - } else if (wParam >= IDBUTTONINDEX0 && (int)wParam - IDBUTTONINDEX0 < messageboxdata->numbuttons) { - EndDialog(hDlg, wParam); - } - return TRUE; - - default: - break; - } - return FALSE; -} - -static SDL_bool ExpandDialogSpace(WIN_DialogData *dialog, size_t space) -{ - /* Growing memory in 64 KiB steps. */ - const size_t sizestep = 0x10000; - size_t size = dialog->size; - - if (size == 0) { - /* Start with 4 KiB or a multiple of 64 KiB to fit the data. */ - size = 0x1000; - if (SIZE_MAX - sizestep < space) { - size = space; - } else if (space > size) { - size = (space + sizestep) & ~(sizestep - 1); - } - } else if (SIZE_MAX - dialog->used < space) { - SDL_OutOfMemory(); - return SDL_FALSE; - } else if (SIZE_MAX - (dialog->used + space) < sizestep) { - /* Close to the maximum. */ - size = dialog->used + space; - } else if (size < dialog->used + space) { - /* Round up to the next 64 KiB block. */ - size = dialog->used + space; - size += sizestep - size % sizestep; - } - - if (size > dialog->size) { - void *data = SDL_realloc(dialog->data, size); - if (!data) { - SDL_OutOfMemory(); - return SDL_FALSE; - } - dialog->data = data; - dialog->size = size; - dialog->lpDialog = (DLGTEMPLATEEX*)dialog->data; - } - return SDL_TRUE; -} - -static SDL_bool AlignDialogData(WIN_DialogData *dialog, size_t size) -{ - size_t padding = (dialog->used % size); - - if (!ExpandDialogSpace(dialog, padding)) { - return SDL_FALSE; - } - - dialog->used += padding; - - return SDL_TRUE; -} - -static SDL_bool AddDialogData(WIN_DialogData *dialog, const void *data, size_t size) -{ - if (!ExpandDialogSpace(dialog, size)) { - return SDL_FALSE; - } - - SDL_memcpy(dialog->data+dialog->used, data, size); - dialog->used += size; - - return SDL_TRUE; -} - -static SDL_bool AddDialogString(WIN_DialogData *dialog, const char *string) -{ - WCHAR *wstring; - WCHAR *p; - size_t count; - SDL_bool status; - - if (!string) { - string = ""; - } - - wstring = WIN_UTF8ToString(string); - if (!wstring) { - return SDL_FALSE; - } - - /* Find out how many characters we have, including null terminator */ - count = 0; - for (p = wstring; *p; ++p) { - ++count; - } - ++count; - - status = AddDialogData(dialog, wstring, count*sizeof(WCHAR)); - SDL_free(wstring); - return status; -} - -static int s_BaseUnitsX; -static int s_BaseUnitsY; -static void Vec2ToDLU(short *x, short *y) -{ - SDL_assert(s_BaseUnitsX != 0); /* we init in WIN_ShowMessageBox(), which is the only public function... */ - - *x = MulDiv(*x, 4, s_BaseUnitsX); - *y = MulDiv(*y, 8, s_BaseUnitsY); -} - - -static SDL_bool AddDialogControl(WIN_DialogData *dialog, WORD type, DWORD style, DWORD exStyle, int x, int y, int w, int h, int id, const char *caption, WORD ordinal) -{ - DLGITEMTEMPLATEEX item; - WORD marker = 0xFFFF; - WORD extraData = 0; - - SDL_zero(item); - item.style = style; - item.exStyle = exStyle; - item.x = x; - item.y = y; - item.cx = w; - item.cy = h; - item.id = id; - - Vec2ToDLU(&item.x, &item.y); - Vec2ToDLU(&item.cx, &item.cy); - - if (!AlignDialogData(dialog, sizeof(DWORD))) { - return SDL_FALSE; - } - if (!AddDialogData(dialog, &item, sizeof(item))) { - return SDL_FALSE; - } - if (!AddDialogData(dialog, &marker, sizeof(marker))) { - return SDL_FALSE; - } - if (!AddDialogData(dialog, &type, sizeof(type))) { - return SDL_FALSE; - } - if (type == DLGITEMTYPEBUTTON || (type == DLGITEMTYPESTATIC && caption != NULL)) { - if (!AddDialogString(dialog, caption)) { - return SDL_FALSE; - } - } else { - if (!AddDialogData(dialog, &marker, sizeof(marker))) { - return SDL_FALSE; - } - if (!AddDialogData(dialog, &ordinal, sizeof(ordinal))) { - return SDL_FALSE; - } - } - if (!AddDialogData(dialog, &extraData, sizeof(extraData))) { - return SDL_FALSE; - } - if (type == DLGITEMTYPEBUTTON) { - dialog->numbuttons++; - } - ++dialog->lpDialog->cDlgItems; - - return SDL_TRUE; -} - -static SDL_bool AddDialogStaticText(WIN_DialogData *dialog, int x, int y, int w, int h, const char *text) -{ - DWORD style = WS_VISIBLE | WS_CHILD | SS_LEFT | SS_NOPREFIX | SS_EDITCONTROL | WS_GROUP; - return AddDialogControl(dialog, DLGITEMTYPESTATIC, style, 0, x, y, w, h, -1, text, 0); -} - -static SDL_bool AddDialogStaticIcon(WIN_DialogData *dialog, int x, int y, int w, int h, Uint16 ordinal) -{ - DWORD style = WS_VISIBLE | WS_CHILD | SS_ICON | WS_GROUP; - return AddDialogControl(dialog, DLGITEMTYPESTATIC, style, 0, x, y, w, h, -2, NULL, ordinal); -} - -static SDL_bool AddDialogButton(WIN_DialogData *dialog, int x, int y, int w, int h, const char *text, int id, SDL_bool isDefault) -{ - DWORD style = WS_VISIBLE | WS_CHILD | WS_TABSTOP; - if (isDefault) { - style |= BS_DEFPUSHBUTTON; - } else { - style |= BS_PUSHBUTTON; - } - /* The first button marks the start of the group. */ - if (dialog->numbuttons == 0) { - style |= WS_GROUP; - } - return AddDialogControl(dialog, DLGITEMTYPEBUTTON, style, 0, x, y, w, h, IDBUTTONINDEX0 + dialog->numbuttons, text, 0); -} - -static void FreeDialogData(WIN_DialogData *dialog) -{ - SDL_free(dialog->data); - SDL_free(dialog); -} - -static WIN_DialogData *CreateDialogData(int w, int h, const char *caption) -{ - WIN_DialogData *dialog; - DLGTEMPLATEEX dialogTemplate; - WORD WordToPass; - - SDL_zero(dialogTemplate); - dialogTemplate.dlgVer = 1; - dialogTemplate.signature = 0xffff; - dialogTemplate.style = (WS_CAPTION | DS_CENTER | DS_SHELLFONT); - dialogTemplate.x = 0; - dialogTemplate.y = 0; - dialogTemplate.cx = w; - dialogTemplate.cy = h; - Vec2ToDLU(&dialogTemplate.cx, &dialogTemplate.cy); - - dialog = (WIN_DialogData *)SDL_calloc(1, sizeof(*dialog)); - if (!dialog) { - return NULL; - } - - if (!AddDialogData(dialog, &dialogTemplate, sizeof(dialogTemplate))) { - FreeDialogData(dialog); - return NULL; - } - - /* No menu */ - WordToPass = 0; - if (!AddDialogData(dialog, &WordToPass, 2)) { - FreeDialogData(dialog); - return NULL; - } - - /* No custom class */ - if (!AddDialogData(dialog, &WordToPass, 2)) { - FreeDialogData(dialog); - return NULL; - } - - /* title */ - if (!AddDialogString(dialog, caption)) { - FreeDialogData(dialog); - return NULL; - } - - /* Font stuff */ - { - /* - * We want to use the system messagebox font. - */ - BYTE ToPass; - - NONCLIENTMETRICSA NCM; - NCM.cbSize = sizeof(NCM); - SystemParametersInfoA(SPI_GETNONCLIENTMETRICS, 0, &NCM, 0); - - /* Font size - convert to logical font size for dialog parameter. */ - { - HDC ScreenDC = GetDC(NULL); - int LogicalPixelsY = GetDeviceCaps(ScreenDC, LOGPIXELSY); - if (!LogicalPixelsY) /* This can happen if the application runs out of GDI handles */ - LogicalPixelsY = 72; - WordToPass = (WORD)(-72 * NCM.lfMessageFont.lfHeight / LogicalPixelsY); - ReleaseDC(NULL, ScreenDC); - } - - if (!AddDialogData(dialog, &WordToPass, 2)) { - FreeDialogData(dialog); - return NULL; - } - - /* Font weight */ - WordToPass = (WORD)NCM.lfMessageFont.lfWeight; - if (!AddDialogData(dialog, &WordToPass, 2)) { - FreeDialogData(dialog); - return NULL; - } - - /* italic? */ - ToPass = NCM.lfMessageFont.lfItalic; - if (!AddDialogData(dialog, &ToPass, 1)) { - FreeDialogData(dialog); - return NULL; - } - - /* charset? */ - ToPass = NCM.lfMessageFont.lfCharSet; - if (!AddDialogData(dialog, &ToPass, 1)) { - FreeDialogData(dialog); - return NULL; - } - - /* font typeface. */ - if (!AddDialogString(dialog, NCM.lfMessageFont.lfFaceName)) { - FreeDialogData(dialog); - return NULL; - } - } - - return dialog; -} - -/* Escaping ampersands is necessary to disable mnemonics in dialog controls. - * The caller provides a char** for dst and a size_t* for dstlen where the - * address of the work buffer and its size will be stored. Their values must be - * NULL and 0 on the first call. src is the string to be escaped. On error, the - * function returns NULL and, on success, returns a pointer to the escaped - * sequence as a read-only string that is valid until the next call or until the - * work buffer is freed. Once all strings have been processed, it's the caller's - * responsibilty to free the work buffer with SDL_free, even on errors. - */ -static const char *EscapeAmpersands(char **dst, size_t *dstlen, const char *src) -{ - char *newdst; - size_t ampcount = 0; - size_t srclen = 0; - - if (src == NULL) { - return NULL; - } - - while (src[srclen]) { - if (src[srclen] == '&') { - ampcount++; - } - srclen++; - } - srclen++; - - if (ampcount == 0) { - /* Nothing to do. */ - return src; - } - if (SIZE_MAX - srclen < ampcount) { - return NULL; - } - if (*dst == NULL || *dstlen < srclen + ampcount) { - /* Allocating extra space in case the next strings are a bit longer. */ - size_t extraspace = SIZE_MAX - (srclen + ampcount); - if (extraspace > 512) { - extraspace = 512; - } - *dstlen = srclen + ampcount + extraspace; - SDL_free(*dst); - *dst = NULL; - newdst = SDL_malloc(*dstlen); - if (newdst == NULL) { - return NULL; - } - *dst = newdst; - } else { - newdst = *dst; - } - - /* The escape character is the ampersand itself. */ - while (srclen--) { - if (*src == '&') { - *newdst++ = '&'; - } - *newdst++ = *src++; - } - - return *dst; -} - -/* This function is called if a Task Dialog is unsupported. */ -static int -WIN_ShowOldMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid) -{ - WIN_DialogData *dialog; - int i, x, y, retval; - const SDL_MessageBoxButtonData *buttons = messageboxdata->buttons; - HFONT DialogFont; - SIZE Size; - RECT TextSize; - wchar_t* wmessage; - TEXTMETRIC TM; - HDC FontDC; - INT_PTR result; - char *ampescape = NULL; - size_t ampescapesize = 0; - Uint16 defbuttoncount = 0; - Uint16 icon = 0; - - HWND ParentWindow = NULL; - - const int ButtonWidth = 88; - const int ButtonHeight = 26; - const int TextMargin = 16; - const int ButtonMargin = 12; - const int IconWidth = GetSystemMetrics(SM_CXICON); - const int IconHeight = GetSystemMetrics(SM_CYICON); - const int IconMargin = 20; - - if (messageboxdata->numbuttons > MAX_BUTTONS) { - return SDL_SetError("Number of butons exceeds limit of %d", MAX_BUTTONS); - } - - switch (messageboxdata->flags) { - case SDL_MESSAGEBOX_ERROR: - icon = (Uint16)(size_t)IDI_ERROR; - break; - case SDL_MESSAGEBOX_WARNING: - icon = (Uint16)(size_t)IDI_WARNING; - break; - case SDL_MESSAGEBOX_INFORMATION: - icon = (Uint16)(size_t)IDI_INFORMATION; - break; - } - - /* Jan 25th, 2013 - dant@fleetsa.com - * - * - * I've tried to make this more reasonable, but I've run in to a lot - * of nonsense. - * - * The original issue is the code was written in pixels and not - * dialog units (DLUs). All DialogBox functions use DLUs, which - * vary based on the selected font (yay). - * - * According to MSDN, the most reliable way to convert is via - * MapDialogUnits, which requires an HWND, which we don't have - * at time of template creation. - * - * We do however have: - * The system font (DLU width 8 for me) - * The font we select for the dialog (DLU width 6 for me) - * - * Based on experimentation, *neither* of these return the value - * actually used. Stepping in to MapDialogUnits(), the conversion - * is fairly clear, and uses 7 for me. - * - * As a result, some of this is hacky to ensure the sizing is - * somewhat correct. - * - * Honestly, a long term solution is to use CreateWindow, not CreateDialog. - * - - * - * In order to get text dimensions we need to have a DC with the desired font. - * I'm assuming a dialog box in SDL is rare enough we can to the create. - */ - FontDC = CreateCompatibleDC(0); - - { - /* Create a duplicate of the font used in system message boxes. */ - LOGFONT lf; - NONCLIENTMETRICS NCM; - NCM.cbSize = sizeof(NCM); - SystemParametersInfo(SPI_GETNONCLIENTMETRICS, 0, &NCM, 0); - lf = NCM.lfMessageFont; - DialogFont = CreateFontIndirect(&lf); - } - - /* Select the font in to our DC */ - SelectObject(FontDC, DialogFont); - - { - /* Get the metrics to try and figure our DLU conversion. */ - GetTextMetrics(FontDC, &TM); - - /* Calculation from the following documentation: - * https://support.microsoft.com/en-gb/help/125681/how-to-calculate-dialog-base-units-with-non-system-based-font - * This fixes bug 2137, dialog box calculation with a fixed-width system font - */ - { - SIZE extent; - GetTextExtentPoint32A(FontDC, "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz", 52, &extent); - s_BaseUnitsX = (extent.cx / 26 + 1) / 2; - } - /*s_BaseUnitsX = TM.tmAveCharWidth + 1;*/ - s_BaseUnitsY = TM.tmHeight; - } - - /* Measure the *pixel* size of the string. */ - wmessage = WIN_UTF8ToString(messageboxdata->message); - SDL_zero(TextSize); - DrawText(FontDC, wmessage, -1, &TextSize, DT_CALCRECT | DT_LEFT | DT_NOPREFIX | DT_EDITCONTROL); - - /* Add margins and some padding for hangs, etc. */ - TextSize.left += TextMargin; - TextSize.right += TextMargin + 2; - TextSize.top += TextMargin; - TextSize.bottom += TextMargin + 2; - - /* Done with the DC, and the string */ - DeleteDC(FontDC); - SDL_free(wmessage); - - /* Increase the size of the dialog by some border spacing around the text. */ - Size.cx = TextSize.right - TextSize.left; - Size.cy = TextSize.bottom - TextSize.top; - Size.cx += TextMargin * 2; - Size.cy += TextMargin * 2; - - /* Make dialog wider and shift text over for the icon. */ - if (icon) { - Size.cx += IconMargin + IconWidth; - TextSize.left += IconMargin + IconWidth; - TextSize.right += IconMargin + IconWidth; - } - - /* Ensure the size is wide enough for all of the buttons. */ - if (Size.cx < messageboxdata->numbuttons * (ButtonWidth + ButtonMargin) + ButtonMargin) - Size.cx = messageboxdata->numbuttons * (ButtonWidth + ButtonMargin) + ButtonMargin; - - /* Reset the height to the icon size if it is actually bigger than the text. */ - if (icon && Size.cy < IconMargin * 2 + IconHeight) { - Size.cy = IconMargin * 2 + IconHeight; - } - - /* Add vertical space for the buttons and border. */ - Size.cy += ButtonHeight + TextMargin; - - dialog = CreateDialogData(Size.cx, Size.cy, messageboxdata->title); - if (!dialog) { - return -1; - } - - if (icon && ! AddDialogStaticIcon(dialog, IconMargin, IconMargin, IconWidth, IconHeight, icon)) { - FreeDialogData(dialog); - return -1; - } - - if (!AddDialogStaticText(dialog, TextSize.left, TextSize.top, TextSize.right - TextSize.left, TextSize.bottom - TextSize.top, messageboxdata->message)) { - FreeDialogData(dialog); - return -1; - } - - /* Align the buttons to the right/bottom. */ - x = Size.cx - (ButtonWidth + ButtonMargin) * messageboxdata->numbuttons; - y = Size.cy - ButtonHeight - ButtonMargin; - for (i = messageboxdata->numbuttons - 1; i >= 0; --i) { - SDL_bool isdefault = SDL_FALSE; - const char *buttontext; - - if (buttons[i].flags & SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT) { - defbuttoncount++; - if (defbuttoncount == 1) { - isdefault = SDL_TRUE; - } - } - - buttontext = EscapeAmpersands(&escape, &escapesize, buttons[i].text); - if (buttontext == NULL || !AddDialogButton(dialog, x, y, ButtonWidth, ButtonHeight, buttontext, buttons[i].buttonid, isdefault)) { - FreeDialogData(dialog); - SDL_free(ampescape); - return -1; - } - x += ButtonWidth + ButtonMargin; - } - SDL_free(ampescape); - - /* If we have a parent window, get the Instance and HWND for them - * so that our little dialog gets exclusive focus at all times. */ - if (messageboxdata->window) { - ParentWindow = ((SDL_WindowData*)messageboxdata->window->driverdata)->hwnd; - } - - result = DialogBoxIndirectParam(NULL, (DLGTEMPLATE*)dialog->lpDialog, ParentWindow, (DLGPROC)MessageBoxDialogProc, (LPARAM)messageboxdata); - if (result >= IDBUTTONINDEX0 && result - IDBUTTONINDEX0 < messageboxdata->numbuttons) { - *buttonid = messageboxdata->buttons[(messageboxdata->numbuttons - 1) - (result - IDBUTTONINDEX0)].buttonid; - retval = 0; - } else if (result == IDCLOSED) { - /* Dialog window closed by user or system. */ - /* This could use a special return code. */ - retval = 0; - *buttonid = -1; - } else { - if (result == 0) { - SDL_SetError("Invalid parent window handle"); - } else if (result == -1) { - SDL_SetError("The message box encountered an error."); - } else if (result == IDINVALPTRINIT || result == IDINVALPTRSETFOCUS || result == IDINVALPTRCOMMAND) { - SDL_SetError("Invalid message box pointer in dialog procedure"); - } else if (result == IDINVALPTRDLGITEM) { - SDL_SetError("Couldn't find dialog control of the default enter-key button"); - } else { - SDL_SetError("An unknown error occured"); - } - retval = -1; - } - - FreeDialogData(dialog); - return retval; -} - -/* TaskDialogIndirect procedure - * This is because SDL targets Windows XP (0x501), so this is not defined in the platform SDK. - */ -typedef HRESULT(FAR WINAPI *TASKDIALOGINDIRECTPROC)(const TASKDIALOGCONFIG *pTaskConfig, int *pnButton, int *pnRadioButton, BOOL *pfVerificationFlagChecked); - -int -WIN_ShowMessageBox(const SDL_MessageBoxData *messageboxdata, int *buttonid) -{ - HWND ParentWindow = NULL; - wchar_t *wmessage; - wchar_t *wtitle; - TASKDIALOGCONFIG TaskConfig; - TASKDIALOG_BUTTON *pButtons; - TASKDIALOG_BUTTON *pButton; - HMODULE hComctl32; - TASKDIALOGINDIRECTPROC pfnTaskDialogIndirect; - HRESULT hr; - char *ampescape = NULL; - size_t ampescapesize = 0; - int nButton; - int nCancelButton; - int i; - - if (SIZE_MAX / sizeof(TASKDIALOG_BUTTON) < messageboxdata->numbuttons) { - return SDL_OutOfMemory(); - } - - /* If we cannot load comctl32.dll use the old messagebox! */ - hComctl32 = LoadLibrary(TEXT("Comctl32.dll")); - if (hComctl32 == NULL) { - return WIN_ShowOldMessageBox(messageboxdata, buttonid); - } - - /* If TaskDialogIndirect doesn't exist use the old messagebox! - This will fail prior to Windows Vista. - The manifest file in the application may require targeting version 6 of comctl32.dll, even - when we use LoadLibrary here! - If you don't want to bother with manifests, put this #pragma in your app's source code somewhere: - pragma comment(linker,"\"/manifestdependency:type='win32' name='Microsoft.Windows.Common-Controls' version='6.0.0.0' processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"") - */ - pfnTaskDialogIndirect = (TASKDIALOGINDIRECTPROC) GetProcAddress(hComctl32, "TaskDialogIndirect"); - if (pfnTaskDialogIndirect == NULL) { - FreeLibrary(hComctl32); - return WIN_ShowOldMessageBox(messageboxdata, buttonid); - } - - /* If we have a parent window, get the Instance and HWND for them - so that our little dialog gets exclusive focus at all times. */ - if (messageboxdata->window) { - ParentWindow = ((SDL_WindowData *) messageboxdata->window->driverdata)->hwnd; - } - - wmessage = WIN_UTF8ToString(messageboxdata->message); - wtitle = WIN_UTF8ToString(messageboxdata->title); - - SDL_zero(TaskConfig); - TaskConfig.cbSize = sizeof (TASKDIALOGCONFIG); - TaskConfig.hwndParent = ParentWindow; - TaskConfig.dwFlags = TDF_SIZE_TO_CONTENT; - TaskConfig.pszWindowTitle = wtitle; - if (messageboxdata->flags & SDL_MESSAGEBOX_ERROR) { - TaskConfig.pszMainIcon = TD_ERROR_ICON; - } else if (messageboxdata->flags & SDL_MESSAGEBOX_WARNING) { - TaskConfig.pszMainIcon = TD_WARNING_ICON; - } else if (messageboxdata->flags & SDL_MESSAGEBOX_INFORMATION) { - TaskConfig.pszMainIcon = TD_INFORMATION_ICON; - } else { - TaskConfig.pszMainIcon = NULL; - } - - TaskConfig.pszContent = wmessage; - TaskConfig.cButtons = messageboxdata->numbuttons; - pButtons = SDL_malloc(sizeof (TASKDIALOG_BUTTON) * messageboxdata->numbuttons); - TaskConfig.nDefaultButton = 0; - nCancelButton = 0; - for (i = 0; i < messageboxdata->numbuttons; i++) - { - const char *buttontext; - pButton = &pButtons[messageboxdata->numbuttons-1-i]; - if (messageboxdata->buttons[i].flags & SDL_MESSAGEBOX_BUTTON_ESCAPEKEY_DEFAULT) { - nCancelButton = messageboxdata->buttons[i].buttonid; - pButton->nButtonID = 2; - } else { - pButton->nButtonID = messageboxdata->buttons[i].buttonid + 1; - if (pButton->nButtonID >= 2) { - pButton->nButtonID++; - } - } - buttontext = EscapeAmpersands(&escape, &escapesize, messageboxdata->buttons[i].text); - if (buttontext == NULL) { - int j; - FreeLibrary(hComctl32); - SDL_free(ampescape); - SDL_free(wmessage); - SDL_free(wtitle); - for (j = 0; j < i; j++) { - SDL_free((wchar_t *) pButtons[j].pszButtonText); - } - SDL_free(pButtons); - return -1; - } - pButton->pszButtonText = WIN_UTF8ToString(buttontext); - if (messageboxdata->buttons[i].flags & SDL_MESSAGEBOX_BUTTON_RETURNKEY_DEFAULT) { - TaskConfig.nDefaultButton = pButton->nButtonID; - } - } - TaskConfig.pButtons = pButtons; - - /* Show the Task Dialog */ - hr = pfnTaskDialogIndirect(&TaskConfig, &nButton, NULL, NULL); - - /* Free everything */ - FreeLibrary(hComctl32); - SDL_free(ampescape); - SDL_free(wmessage); - SDL_free(wtitle); - for (i = 0; i < messageboxdata->numbuttons; i++) { - SDL_free((wchar_t *) pButtons[i].pszButtonText); - } - SDL_free(pButtons); - - /* Check the Task Dialog was successful and give the result */ - if (SUCCEEDED(hr)) { - if (nButton == 2) { - *buttonid = nCancelButton; - } else if (nButton > 2) { - *buttonid = nButton-1-1; - } else { - *buttonid = nButton-1; - } - return 0; - } - - /* We failed showing the Task Dialog, use the old message box! */ - return WIN_ShowOldMessageBox(messageboxdata, buttonid); -} - -#endif /* SDL_VIDEO_DRIVER_WINDOWS */ - -/* vi: set ts=4 sw=4 expandtab: */ |