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annotate src/video/win32/SDL_win32events.c @ 1719:5b9f50c957ed SDL-1.3

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You can now create multiple windows on Win32
author Sam Lantinga <slouken@libsdl.org>
date Wed, 28 Jun 2006 08:12:07 +0000
parents ed4d4f1ea201
children 5daa04d862f1
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "SDL_win32video.h"
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25
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26
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27 LRESULT CALLBACK
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28 WIN_WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
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29 {
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30 SDL_WindowData *data;
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31 SDL_Window *window;
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32
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33 /* Get the window data for the window */
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34 data = (SDL_WindowData *) GetProp(hwnd, TEXT("SDL_WindowData"));
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35 if (!data) {
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36 return CallWindowProc(DefWindowProc, hwnd, msg, wParam, lParam);
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37 }
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38 window = data->window;
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39
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40 return CallWindowProc(data->wndproc, hwnd, msg, wParam, lParam);
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41 }
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42
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43 void
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44 WIN_PumpEvents(_THIS)
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45 {
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46 MSG msg;
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47 while (PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
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48 TranslateMessage(&msg);
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49 DispatchMessage(&msg);
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50 }
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51 }
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52
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53 static int app_registered = 0;
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54 LPTSTR SDL_Appname = NULL;
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55 Uint32 SDL_Appstyle = 0;
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56 HINSTANCE SDL_Instance = NULL;
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57
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58 /* Register the class for this application */
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59 int
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60 SDL_RegisterApp(char *name, Uint32 style, void *hInst)
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61 {
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62 WNDCLASS class;
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63
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64 /* Only do this once... */
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65 if (app_registered) {
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66 ++app_registered;
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67 return (0);
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68 }
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69 if (!name && !SDL_Appname) {
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70 name = "SDL_app";
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71 SDL_Appstyle = (CS_BYTEALIGNCLIENT | CS_OWNDC);
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72 SDL_Instance = hInst ? hInst : GetModuleHandle(NULL);
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73 }
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74
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75 if (name) {
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76 SDL_Appname = WIN_UTF8ToString(name);
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77 SDL_Appstyle = style;
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78 SDL_Instance = hInst ? hInst : GetModuleHandle(NULL);
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79 }
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80
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81 /* Register the application class */
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82 class.hCursor = NULL;
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83 class.hIcon = LoadImage(SDL_Instance, SDL_Appname,
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84 IMAGE_ICON, 0, 0, LR_DEFAULTCOLOR);
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85 class.lpszMenuName = NULL;
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86 class.lpszClassName = SDL_Appname;
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87 class.hbrBackground = NULL;
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88 class.hInstance = SDL_Instance;
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89 class.style = SDL_Appstyle;
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90 class.lpfnWndProc = DefWindowProc;
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91 class.cbWndExtra = 0;
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92 class.cbClsExtra = 0;
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93 if (!RegisterClass(&class)) {
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94 SDL_SetError("Couldn't register application class");
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95 return (-1);
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96 }
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97
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98 app_registered = 1;
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99 return (0);
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100 }
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101
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102 /* Unregisters the windowclass registered in SDL_RegisterApp above. */
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103 void
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104 SDL_UnregisterApp()
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105 {
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106 WNDCLASS class;
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107
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108 /* SDL_RegisterApp might not have been called before */
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109 if (!app_registered) {
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110 return;
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111 }
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112 --app_registered;
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113 if (app_registered == 0) {
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114 /* Check for any registered window classes. */
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115 if (GetClassInfo(SDL_Instance, SDL_Appname, &class)) {
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116 UnregisterClass(SDL_Appname, SDL_Instance);
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117 }
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118 SDL_free(SDL_Appname);
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119 SDL_Appname = NULL;
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120 }
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121 }
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122
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123 /* Sets an error message based on GetLastError() */
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124 void
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125 WIN_SetError(const char *prefix)
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126 {
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127 TCHAR buffer[1024];
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128 char *message;
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129
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130 FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM,
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131 NULL,
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132 GetLastError(), 0, buffer, SDL_arraysize(buffer), NULL);
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133
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134 message = WIN_StringToUTF8(buffer);
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135 SDL_SetError("%s%s%s", prefix ? prefix : "", prefix ? ":" : "", message);
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136 SDL_free(message);
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137 }
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138
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139 /* vi: set ts=4 sw=4 expandtab: */