2019獨(dú)角獸企業(yè)重金招聘Python工程師標(biāo)準(zhǔn)>>>

對(duì)話框就是一個(gè)簡(jiǎn)單的窗口，僅包含標(biāo)題、文字信息和一兩個(gè)特定文字的按鈕。

所以我們先改造下上篇的按鈕，增加類型屬性，并添加幾個(gè)對(duì)話框?qū)Ｓ玫奶囟ǖ陌粹o。

//?MySDL_Button.h //?SDL2?自定義部件?-?按鈕#include?<SDL2/SDL.h> #include?<SDL2/SDL_ttf.h>#ifndef?MYSDL2_BUTTON_H #define?MYSDL2_BUTTON_H//?按鈕狀態(tài) typedef?enum?en_SDL_Button_State {BTN_STATE_NORMAL,?????//?正常BTN_STATE_DOWN,???????//?按下BTN_STATE_UP??????????//?彈起 }?SDL_Button_State;//?按鈕類型 typedef??enum?en_SDL_Button_Type {BT_TYPE_CUSTOM?=?0,?//?自定義類型，顯示給定文字BT_TYPE_OK?????=?1,?//?其他類型，顯示特定文字BT_TYPE_CANCEL?=?2,BT_TYPE_YES????=?4,BT_TYPE_NO?????=?8,BT_TYPE_OKCANCEL?=?BT_TYPE_OK?|?BT_TYPE_CANCEL,BT_TYPE_YESNO?=?BT_TYPE_YES?|?BT_TYPE_NO }?SDL_Button_Type;//?按鈕結(jié)構(gòu) typedef?struct?st_SDL_Button {SDL_Button_Type?type;???????//?類型int?id;?????????????????????//?IDint?x,?y,?w,?h;?????????????//?尺寸char?*text;?????????????????//?文字_Bool?enable;???????????????//?是否可用SDL_Button_State?state;?????//?狀態(tài) }?SDL_Button;//?畫(huà)按鈕 //?參數(shù)：pRen?=?渲染器；pFont?=?字體；pBtn?=?按鈕數(shù)組；btnNum?=?按鈕數(shù)量 void?SDL_DrawButton(SDL_Renderer?*pRen,?TTF_Font?*pFont,?SDL_Button?*pBtn,?int?btnNum);//?坐標(biāo)是否在有效按鈕上 //?參數(shù)：x，y?=?坐標(biāo)；pBtn?=?按鈕數(shù)組；btnNum?=?按鈕數(shù)量 //?返回值：按鈕ID，或者?-1（不在有效按鈕上） int?SDL_isOnButton(int?x,?int?y,?SDL_Button?*pBtn,?int?btnNum);#endif //?MySDL_Button.h //?SDL2?自定義部件?-?按鈕#include?"MySDL_Texture.h" #include?"MySDL_Button.h"//?自定義按鈕文字 static?char?*szOKCANCEL[]?=?{"?確定?",?"?取消?",}; static?char?*szYESNO[]????=?{"??是??",?"??否??"};//?坐標(biāo)是否在有效按鈕上 //?參數(shù)：x，y?=?坐標(biāo)；pBtn?=?按鈕數(shù)組；btnNum?=?按鈕數(shù)量 //?返回值：按鈕ID，或者?-1（不在有效按鈕上） int?SDL_isOnButton(int?x,?int?y,?SDL_Button?*pBtn,?int?btnNum) {for(int?i?=?0;?i?<?btnNum;?i++)if(pBtn[i].enable?&&?x?>=?pBtn[i].x?&&?x?<=?pBtn[i].x?+?pBtn[i].w&&?y?>=?pBtn[i].y?&&?y?<=?pBtn[i].y?+?pBtn[i].h)return?pBtn[i].id;return?-1; }//?畫(huà)按鈕 //?參數(shù)：pRen?=?渲染器；pFont?=?字體；pBtn?=?按鈕數(shù)組；btnNum?=?按鈕數(shù)量 void?SDL_DrawButton(SDL_Renderer?*pRen,?TTF_Font?*pFont,?SDL_Button?*pBtn,?int?btnNum) {int?bgc,?tc;????//?背景顏色、文字顏色Uint8?ulc,?dlc;?//?按鈕上、下線的顏色（單R、G、B）SDL_Texture?*pBGTxt,?*pTextTxt;?//?背景、文字紋理SDL_Rect?rt;for(int?i?=?0;?i?<?btnNum;?i++){//?根據(jù)按鈕是否可用及其狀態(tài)決定底色、文字顏色if(pBtn[i].enable){tc??=?0;switch(pBtn[i].state){case?BTN_STATE_NORMAL?:bgc?=?0xC5C5C5;ulc?=?0xFF;dlc?=?0;break;case?BTN_STATE_DOWN?:bgc?=?0xA0A0A0;ulc?=?0;dlc?=?0xFF;break;case?BTN_STATE_UP?:bgc?=?0xF1F1F1;ulc?=?0xFF;dlc?=?0;break;default?:break;}}else{tc??=?0x989898;bgc?=?0xF1F1F1;ulc?=?0xFF;dlc?=?0;}//?根據(jù)類型決定按鈕上顯示的文字pBGTxt?=?GetRGBTexture(pRen,?pBtn[i].w,?pBtn[i].h,?bgc);switch(pBtn[i].type){case?BT_TYPE_OK?:pTextTxt?=?GetTextTexture(pRen,?pFont,?szOKCANCEL[0],?0);break;case?BT_TYPE_CANCEL?:pTextTxt?=?GetTextTexture(pRen,?pFont,?szOKCANCEL[1],?0);break;case?BT_TYPE_YES?:pTextTxt?=?GetTextTexture(pRen,?pFont,?szYESNO[0],?0);break;case?BT_TYPE_NO?:pTextTxt?=?GetTextTexture(pRen,?pFont,?szYESNO[1],?0);break;case?BT_TYPE_CUSTOM?:pTextTxt?=?GetTextTexture(pRen,?pFont,?pBtn[i].text,?tc);break;default?:break;}if(pBGTxt?!=?NULL?&&?pTextTxt?!=?NULL){rt.x?=?pBtn[i].x;rt.y?=?pBtn[i].y;rt.w?=?pBtn[i].w;rt.h?=?pBtn[i].h;SDL_RenderCopy(pRen,?pBGTxt,?NULL,?&rt);SDL_RenderCopy(pRen,?pTextTxt,?NULL,?&rt);//?畫(huà)上邊線SDL_SetRenderDrawColor(pRen,?ulc,?ulc,?ulc,?SDL_ALPHA_OPAQUE);SDL_RenderDrawLine(pRen,?rt.x,?rt.y,?rt.x?+?rt.w,?rt.y);SDL_RenderDrawLine(pRen,?rt.x,?rt.y,?rt.x,?rt.y?+?rt.h);//?畫(huà)下邊線SDL_SetRenderDrawColor(pRen,?dlc,?dlc,?dlc,?SDL_ALPHA_OPAQUE);SDL_RenderDrawLine(pRen,?rt.x?+?rt.w,?rt.y,?rt.x?+?rt.w,?rt.y?+?rt.h);SDL_RenderDrawLine(pRen,?rt.x,?rt.y?+?rt.h,?rt.x?+?rt.w,?rt.y?+?rt.h);}if(pBGTxt?!=?NULL)???SDL_DestroyTexture(pBGTxt);if(pTextTxt?!=?NULL)?SDL_DestroyTexture(pTextTxt);} }

有了按鈕，就可以建一個(gè)簡(jiǎn)單的窗口，只顯示標(biāo)題和文字內(nèi)容，再加幾個(gè)按鈕。是窗口，當(dāng)然也要自己處理消息了。

//?MySDL_Dialog.h //?SDL2?自定義部件?-?對(duì)話框#include?<SDL2/SDL.h> #include?<SDL2/SDL_ttf.h> #include?"MySDL_Button.h"#ifndef?MYSDL2_DIALOG_H #define?MYSDL2_DIALOG_H//?對(duì)話框結(jié)構(gòu) typedef?struct?st_SDL_Dialog {char?*title;????????????????//?標(biāo)題char?*text;?????????????????//?文字SDL_Button_Type?btn_type;???//?按鈕類型 }?SDL_Dialog;//?顯示一個(gè)簡(jiǎn)單的對(duì)話框 //?參數(shù)：pWin?=?父窗口；pFont?=?字體；title?=?標(biāo)題；text?=?文字；btn_type?=?按鈕類型 //返回值：被點(diǎn)擊的按鈕的類型值 extern?SDL_Button_Type?ShowDialog(SDL_Window?*pWin,?TTF_Font?*pFont,?char?*title,?char?*text,?SDL_Button_Type?btn_type);#endif //?MySDL_Dialog.c //?SDL2?自定義部件?-?對(duì)話框#include?<string.h> #include?"MySDL_Texture.h" #include?"MySDL_Dialog.h"#define?MARGIN?10??????//?窗口邊寬static?void?UpdateWindow(SDL_Window?*pWin,?SDL_Renderer?*pRen,?SDL_Texture?**pTxt,TTF_Font?*pFont,?char?*title,?char?*text,?SDL_Button?*pBtn,?int?btnNum);//?顯示一個(gè)簡(jiǎn)單的對(duì)話框 //?參數(shù)：pWin?=?父窗口；pFont?=?字體；title?=?標(biāo)題；text?=?文字；btn_type?=?按鈕類型 //返回值：被點(diǎn)擊的按鈕的類型值 extern?SDL_Button_Type?ShowDialog(SDL_Window?*pWin,?TTF_Font?*pFont,?char?*title,char?*text,?SDL_Button_Type?btn_type) {int?w,?h;SDL_Window???*pThisWin;SDL_Renderer?*pRen;SDL_Texture??*pTxt[4];??//?整體背景（標(biāo)題欄、邊框），文字背景，標(biāo)題、文字的紋理SDL_Event????event;_Bool????????bRun?=?1;SDL_Button_Type?ret?=?-1;//?通常對(duì)話框上的按鈕有三種形式：1、單“確定”，2、“確定”?+?“取消”，3、“是”?+?“否”。//?默認(rèn)定義為?2、“確定”?+?“取消”SDL_Button?btn[2]?={{BT_TYPE_OK,?0,?0,?0,?0,?0,?NULL,?1,?BTN_STATE_NORMAL},{BT_TYPE_CANCEL,?1,?0,?0,?0,?0,?NULL,?1,?BTN_STATE_NORMAL}};int?btnNum?=?(btn_type?==?BT_TYPE_OK???1?:?2);??//?控制按鈕數(shù)量一個(gè)，則只有?1、單“確定”int?id;//?調(diào)整為?3、“是”?和“否”if(btn_type?==?BT_TYPE_YESNO){btn[0].type?=?BT_TYPE_YES;btn[1].type?=?BT_TYPE_NO;}SDL_GetWindowSize(pWin,?&w,?&h);if(SDL_CreateWindowAndRenderer(w?/?2,?h?/?2,?SDL_WINDOW_BORDERLESS|?SDL_WINDOW_INPUT_GRABBED,?&pThisWin,?&pRen)?==?-1)goto?label_error;pTxt[0]?=?GetRGBTexture(pRen,?w?/?2,?h?/?2,?0x00FFFF);pTxt[1]?=?GetRGBTexture(pRen,?w?/?2?-?2?*?MARGIN,?h?/?2?-?5?*?MARGIN,?0xFFFFFF);pTxt[2]?=?GetTextTexture(pRen,?pFont,?title,?0);pTxt[3]?=?GetTextTexture(pRen,?pFont,?text,?0);if(NULL?==?pTxt[0]?||?NULL?==?pTxt[1]?||?NULL?==?pTxt[2]?||?NULL?==?pTxt[3])goto?label_error;while(bRun?&&?SDL_WaitEvent(&event)){switch(event.type){case?SDL_MOUSEMOTION?:??????//?鼠標(biāo)移動(dòng)id?=?SDL_isOnButton(event.button.x,?event.button.y,?btn,?btnNum);if(id?>=?0)?//?鼠標(biāo)在某個(gè)按鈕上{//?鼠標(biāo)左鍵壓下則該按鈕處于凹狀態(tài)，無(wú)鼠標(biāo)鍵壓下則該按鈕處于凸?fàn)顟B(tài)if(event.motion.state?==?SDL_BUTTON_LMASK)btn[id].state?=?BTN_STATE_DOWN;elsebtn[id].state?=?BTN_STATE_UP;}else????????//?鼠標(biāo)不在按鈕上，則所有按鈕正常顯示{for(int?i?=?0;?i?<?btnNum;?i++)btn[i].state?=?BTN_STATE_NORMAL;}UpdateWindow(pThisWin,?pRen,?pTxt,?pFont,?title,?text,?btn,?btnNum);break;case?SDL_MOUSEBUTTONDOWN?:??//?鼠標(biāo)鍵按下id?=?SDL_isOnButton(event.button.x,?event.button.y,?btn,?btnNum);;if(id?>=?0)?//?按下某個(gè)按鈕，該按鈕處于凹狀態(tài){btn[id].state?=?BTN_STATE_DOWN;UpdateWindow(pThisWin,?pRen,?pTxt,?pFont,?title,?text,?btn,?btnNum);}break;case?SDL_MOUSEBUTTONUP?:????//?鼠標(biāo)按鍵彈起id?=?SDL_isOnButton(event.button.x,?event.button.y,?btn,?btnNum);if(id?>=?0)?//?在某個(gè)按鈕上則結(jié)束對(duì)話框，返回按鈕類型{ret?=?btn[id].type;bRun?=?0;}break;case?SDL_KEYUP?://?鍵盤的?Esc?鍵?也當(dāng)“取消”處理if(event.key.keysym.sym?==?SDLK_ESCAPE){ret?=?BT_TYPE_CANCEL;bRun?=?0;}break;case?SDL_WINDOWEVENT?:??????//??有窗口消息，重新計(jì)算窗口尺寸UpdateWindow(pThisWin,?pRen,?pTxt,?pFont,?title,?text,?btn,?btnNum);break;default?:break;}}label_error:if(pTxt[0]?!=?NULL)?SDL_DestroyTexture(pTxt[0]);if(pTxt[1]?!=?NULL)?SDL_DestroyTexture(pTxt[1]);if(pTxt[2]?!=?NULL)?SDL_DestroyTexture(pTxt[2]);if(pTxt[3]?!=?NULL)?SDL_DestroyTexture(pTxt[3]);if(pRen?!=?NULL)????SDL_DestroyRenderer(pRen);if(pThisWin?!=?NULL)?SDL_DestroyWindow(pThisWin);return?ret; }//?重繪窗口 static?void?UpdateWindow(SDL_Window?*pWin,?SDL_Renderer?*pRen,?SDL_Texture?**pTxt,TTF_Font?*pFont,?char?*title,?char?*text,?SDL_Button?*pBtn,?int?btnNum) {SDL_Rect?rt;int?w,?h;SDL_GetWindowSize(pWin,?&w,?&h);SDL_RenderClear(pRen);//?整體背景（標(biāo)題欄、邊框）SDL_RenderCopy(pRen,?pTxt[0],?NULL,?NULL);//文字背景rt.x?=?MARGIN;rt.y?=?4?*?MARGIN;rt.w?=?w?-?2?*?MARGIN;rt.h?=?h?-?5?*?MARGIN;SDL_RenderCopy(pRen,?pTxt[1],?NULL,?&rt);//?標(biāo)題rt.x?=?MARGIN;rt.y?=?MARGIN?/?2;rt.w?=?MARGIN?*?strlen(title);rt.h?=?3?*?MARGIN;SDL_RenderCopy(pRen,?pTxt[2],?NULL,?&rt);//?文字rt.y?=?6?*?MARGIN;rt.w?=?MARGIN?*?strlen(text);rt.h?=?3?*?MARGIN;SDL_RenderCopy(pRen,?pTxt[3],?NULL,?&rt);//?按鈕if(btnNum?==?1){pBtn[0].x?=?3?*?w?/?4;pBtn[0].y?=?3?*?h?/?4;}else{pBtn[0].x?=?w?/?4;pBtn[1].x?=?3?*?w?/?4;pBtn[0].y?=?pBtn[1].y?=?3?*?h?/?4;}pBtn[1].w?=?pBtn[0].w?=?w?/?6;pBtn[1].h?=?pBtn[0].h?=?h?/?6;SDL_DrawButton(pRen,?pFont,?pBtn,?btnNum);SDL_RenderPresent(pRen); }

然后就可以在五子棋里測(cè)試了，給“悔棋”按鈕加上顯示對(duì)話框的功能

//?Five.c //?SDL2?五子棋//#define?_DEBUG_#include?<SDL2/SDL.h> #include?<SDL2/SDL_image.h> #include?<SDL2/SDL_ttf.h> #include?<SDL2/SDL_mixer.h> #include?<stdio.h> #include?<string.h> #include?"MySDL_Texture.h" #include?"MySDL_Button.h" #include?"MySDL_Dialog.h" #include?"FiveData.h"//?資源文件 int??BackColor??????=?0xFFFFFF;?//?棋子圖片的背景色 char?*ImgFileName[]?= {"Resource/BackGround.jpg",??//?棋盤背景圖文件"Resource/BlackPiece.jpg",??//?黑棋子圖文件"Resource/WhitePiece.jpg"???//?白棋子圖文件 }; char?SoundFileName[]?=?"Resource/Stone.mp3";????????//?落子音效文件 char?FontFileName[]??=?"C:/Windows/Fonts/msyh.ttf";?//?Windows?下字體文件//?字符串常量 char?szWinTitle[]??=?"SDL2?五子棋"; char?*szWho[]??????=?{"黑方",?"白方"}; char?*szGameTips[]?=?{"第?%d?手，輪到?%s?落子",?"共?%d?手，%s?取得本局勝利"};_Bool?OnKeyUp(int?x,?int?y,?int?nSpacing); void?DrawBoard(SDL_Renderer?*pRen,?int?nSpacing,?int?c); void?DrawPieces(SDL_Renderer?*pRen,?int?nSpacing,?SDL_Texture?**pImgTxt); void?PrintString(SDL_Renderer?*pRen,?int?nSpacing,?TTF_Font?*pFont,?char?*text,?int?c); static?void?UpdateWindow(SDL_Window?*pWin,?SDL_Renderer?*pRen,?int?nSpacing,TTF_Font?*pFont,?SDL_Texture?**pImgTxt,?SDL_Button?*pBtn,?int?n);#undef?main int?main(int?argc,?char?**argv) {int?WinW?=?640,?WinH?=?480;?//?屏幕尺寸int?nSpacing;???????????????//?棋盤線距SDL_Window???*pWin;?????????//?主窗口SDL_Renderer?*pRen;?????????//?主窗口渲染器SDL_Texture??*pImgTxt[3];???//?棋盤背景、黑白棋子圖紋理TTF_Font?????*pFont;????????//?提示文字字體Mix_Music????*pMusic;???????//?音效SDL_Event????event;?????????//?事件_Bool????????bRun?=?1;??????//?持續(xù)等待事件控制循環(huán)標(biāo)識(shí)//?按鈕SDL_Button?btn[]?={{BT_TYPE_CUSTOM,?0,?0,?0,?0,?0,?"?新局?",?0,?BTN_STATE_NORMAL},{BT_TYPE_CUSTOM,?1,?0,?0,?0,?0,?"?悔棋?",?0,?BTN_STATE_NORMAL},};int?btnNum?=?sizeof(btn)?/?sizeof(SDL_Button);int?id;//?初始化：SDL2、SDL_image(jpg)、SDL_ttf、SDL_mixer(mp3)if(SDL_Init(SDL_INIT_EVERYTHING)?==?-1?||?IMG_Init(IMG_INIT_JPG)?==?-1?||?TTF_Init()?==?-1||?Mix_Init(MIX_INIT_MP3)?==?-1?||?Mix_OpenAudio(MIX_DEFAULT_FREQUENCY,MIX_DEFAULT_FORMAT,?MIX_DEFAULT_CHANNELS,?4096)?==?-1){ #ifdef?_DEBUG_fprintf(stderr,?"1?%s",?SDL_GetError()); #endifreturn?1;}//?創(chuàng)建主窗口及其渲染器if(SDL_CreateWindowAndRenderer(WinW,?WinH,?SDL_WINDOW_FULLSCREEN,?&pWin,?&pRen)?==?-1){ #ifdef?_DEBUG_fprintf(stderr,?"2?%s",?SDL_GetError()); #endifgoto?label_error;}SDL_SetWindowTitle(pWin,?szWinTitle);//?加載圖片文件if(NULL?==?(pImgTxt[0]?=?GetImageTexture(pRen,?ImgFileName[0],?0,?0))||?NULL?==?(pImgTxt[1]?=?GetImageTexture(pRen,?ImgFileName[1],?1,?BackColor))||?NULL?==?(pImgTxt[2]?=?GetImageTexture(pRen,?ImgFileName[2],?1,?BackColor))){ #ifdef?_DEBUG_fprintf(stderr,?"3?%s",?IMG_GetError()); #endifgoto?label_error;}//?加載字體文件if(NULL?==?(pFont?=?TTF_OpenFont(FontFileName,?20))){ #ifdef?_DEBUG_fprintf(stderr,?"4?%s",?TTF_GetError()); #endifgoto?label_error;}//?加載聲音文件if(NULL?==?(pMusic?=?Mix_LoadMUS(SoundFileName))){ #ifdef?_DEBUG_fprintf(stderr,?"5?%s",?Mix_GetError()); #endifgoto?label_error;}Five_ResetData();while(bRun?&&?SDL_WaitEvent(&event)){switch(event.type){case?SDL_MOUSEMOTION?:??????//?鼠標(biāo)移動(dòng)id?=?SDL_isOnButton(event.button.x,?event.button.y,?btn,?btnNum);//?鼠標(biāo)在某個(gè)按鈕上if(id?>=?0){//?鼠標(biāo)左鍵壓下則該按鈕處于凹狀態(tài)，無(wú)鼠標(biāo)鍵壓下則該按鈕處于凸?fàn)顟B(tài)if(event.motion.state?==?SDL_BUTTON_LMASK)btn[id].state?=?BTN_STATE_DOWN;elsebtn[id].state?=?BTN_STATE_UP;}//?鼠標(biāo)不在按鈕上else{//?所有按鈕正常顯示for(int?i?=?0;?i?<?btnNum;?i++)btn[i].state?=?BTN_STATE_NORMAL;}UpdateWindow(pWin,?pRen,?nSpacing,?pFont,?pImgTxt,?btn,?btnNum);break;case?SDL_MOUSEBUTTONDOWN?:??//?鼠標(biāo)鍵按下id?=?SDL_isOnButton(event.button.x,?event.button.y,?btn,?btnNum);;//?按下某個(gè)按鈕，該按鈕處于凹狀態(tài)if(id?>=?0){btn[id].state?=?BTN_STATE_DOWN;UpdateWindow(pWin,?pRen,?nSpacing,?pFont,?pImgTxt,?btn,?btnNum);}break;case?SDL_MOUSEBUTTONUP?:????//?鼠標(biāo)按鍵彈起id?=?SDL_isOnButton(event.button.x,?event.button.y,?btn,?2);//?在某個(gè)按鈕上則響應(yīng)功能，在棋盤則檢測(cè)落子//?新局if(id?==?0){btn[0].enable?=?0;btn[1].enable?=?0;Five_ResetData();}//?悔棋e(cuò)lse?if(id?==?1){id?=?ShowDialog(pWin,?pFont,?"悔棋",?"要悔棋嗎？",?BT_TYPE_YESNO);if(id?==?BT_TYPE_YES)ShowDialog(pWin,?pFont,?"對(duì)不起",?"還沒(méi)實(shí)現(xiàn)悔棋功能呢",?BT_TYPE_OKCANCEL);else?if(id?==?BT_TYPE_NO)ShowDialog(pWin,?pFont,?"還好",?"你沒(méi)點(diǎn)是",?BT_TYPE_OK);}//?有效落子else?if(id?<?0?&&?g_iWho?!=?NONE?&&?OnKeyUp(event.button.x,?event.button.y,?nSpacing)){Mix_PlayMusic(pMusic,?0);btn[0].enable?=?1;btn[1].enable?=?1;if(Five_isFive())g_iWho?=?NONE;}UpdateWindow(pWin,?pRen,?nSpacing,?pFont,?pImgTxt,?btn,?btnNum);break;case?SDL_WINDOWEVENT?:??????//??有窗口消息，重新計(jì)算窗口尺寸SDL_GetWindowSize(pWin,?&WinW,?&WinH);nSpacing?=?SDL_min(WinW,?WinH)?/?(MAX_LINES?+?2);UpdateWindow(pWin,?pRen,?nSpacing,?pFont,?pImgTxt,?btn,?btnNum);break;case?SDL_QUIT?:bRun?=?0;break;default?:break;}}label_error://?清理if(pImgTxt[0]?!=?NULL)?SDL_DestroyTexture(pImgTxt[0]);if(pImgTxt[1]?!=?NULL)?SDL_DestroyTexture(pImgTxt[1]);if(pImgTxt[2]?!=?NULL)?SDL_DestroyTexture(pImgTxt[2]);if(pRen?!=?NULL)???SDL_DestroyRenderer(pRen);if(pWin?!=?NULL)???SDL_DestroyWindow(pWin);if(pFont?!=?NULL)??TTF_CloseFont(pFont);if(pMusic?!=?NULL)?Mix_FreeMusic(pMusic);Mix_CloseAudio();TTF_Quit();IMG_Quit();SDL_Quit();return?0; }//?重繪窗口 static?void?UpdateWindow(SDL_Window?*pWin,?SDL_Renderer?*pRen,?int?nSpacing,TTF_Font?*pFont,?SDL_Texture?**pImgTxt,?SDL_Button?*pBtn,?int?btnNum) {char?szString[256];SDL_RenderClear(pRen);SDL_RenderCopy(pRen,?pImgTxt[0],?NULL,?NULL);DrawBoard(pRen,?nSpacing,?0);DrawPieces(pRen,?nSpacing,?pImgTxt);sprintf(szString,?szGameTips[g_iWho?==?NONE],g_nHands?+?(g_iWho?!=?NONE),?szWho[(g_nHands?+?(g_iWho?==?NONE))?%?2]);PrintString(pRen,?nSpacing,?pFont,?szString,?0);pBtn[1].x?=?pBtn[0].x?=?nSpacing?*?(MAX_LINES?+?1);pBtn[0].y?=?nSpacing;pBtn[1].y?=?nSpacing?*?3;pBtn[1].w?=?pBtn[0].w?=?nSpacing?*?2;pBtn[1].h?=?pBtn[0].h?=?nSpacing;SDL_DrawButton(pRen,?pFont,?pBtn,?btnNum);SDL_RenderPresent(pRen); }//?響應(yīng)落子按鍵 //?參數(shù)：(x，y)?=?被點(diǎn)擊的窗口坐標(biāo)；nSpacing?=?棋盤線距 _Bool?OnKeyUp(int?x,?int?y,?int?nSpacing) {//?計(jì)算落點(diǎn)棋盤坐標(biāo)int?m?=?(x?-?0.5?*?nSpacing)?/?nSpacing;int?n?=?(y?-?0.5?*?nSpacing)?/?nSpacing;//?處理有效落點(diǎn)if(m?>=?0?&&?m?<?MAX_LINES?&&?n?>=?0?&&?n?<?MAX_LINES?&&?g_iBoard[m][n]?==?NONE){Five_AddPiece(m,?n,?g_iWho);return?1;}return?0; }//?畫(huà)圓（SDL2?沒(méi)有畫(huà)圓的函數(shù)，先用矩形框代替吧） //?參數(shù)：pRen?=?渲染器；(x，y)?=?圓心坐標(biāo)；r?=?半徑；c?=?填充色 void?FillCircle(SDL_Renderer?*pRen,?int?x,?int?y,?int?r,?int?c) {SDL_Rect?rt?=?{x?-?r,?y?-?r,?2?*?r,?2?*?r};SDL_SetRenderDrawColor(pRen,?c?>>?16,?(c?>>?8)?&?0xFF,?c?&?0xFF,?SDL_ALPHA_OPAQUE);SDL_RenderFillRect(pRen,?&rt); }//?畫(huà)棋盤 //?參數(shù)：pRen?=?渲染器；nSpacing?=?棋盤線距；c?=?線及星顏色 void?DrawBoard(SDL_Renderer?*pRen,?int?nSpacing,?int?c) {int?r,?x,?y,?z;//?棋盤線SDL_SetRenderDrawColor(pRen,?c?>>?16,?(c?>>?8)?&?0xFF,?c?&?0xFF,?SDL_ALPHA_OPAQUE);for(int?i?=?1;?i?<=?MAX_LINES;?i++){SDL_RenderDrawLine(pRen,?nSpacing,?i?*?nSpacing,?MAX_LINES?*?nSpacing,?i?*?nSpacing);SDL_RenderDrawLine(pRen,?i?*?nSpacing,?nSpacing,?i?*?nSpacing,?MAX_LINES?*?nSpacing);}//?星位r?=?nSpacing?*?0.2;?????????????????//?星半徑x?=?nSpacing?*?4;???????????????????//?第四線y?=?nSpacing?*?(MAX_LINES?+?1)?/?2;?//?中線z?=?nSpacing?*?(MAX_LINES?-?3);?????//?倒數(shù)第四線FillCircle(pRen,?x,?x,?r,?c);FillCircle(pRen,?y,?x,?r,?c);FillCircle(pRen,?z,?x,?r,?c);FillCircle(pRen,?x,?y,?r,?c);FillCircle(pRen,?y,?y,?r,?c);FillCircle(pRen,?z,?y,?r,?c);FillCircle(pRen,?x,?z,?r,?c);FillCircle(pRen,?y,?z,?r,?c);FillCircle(pRen,?z,?z,?r,?c); }//?畫(huà)棋子 //?參數(shù)：pRen?=?渲染器；nSpacing?=?棋盤線距；pImgTxt?=?棋子紋理 void?DrawPieces(SDL_Renderer?*pRen,?int?nSpacing,?SDL_Texture?**pImgTxt) {int?r?=?0.4?*?nSpacing;?//?棋子半徑SDL_Rect?rt?=?{0,?0,?2?*?r,?2?*?r};if(g_nHands?<=?0)return;for(int?i?=?0;?i?<?MAX_LINES;?i++){for(int?j?=?0;?j?<?MAX_LINES;?j++){rt.x?=?(i?+?1)?*?nSpacing?-?r;rt.y?=?(j?+?1)?*?nSpacing?-?r;if(g_iBoard[i][j]?==?BLACK)SDL_RenderCopy(pRen,?pImgTxt[1],?NULL,?&rt);else?if(g_iBoard[i][j]?==?WHITE)SDL_RenderCopy(pRen,?pImgTxt[2],?NULL,?&rt);}} }//?提示文字 //?參數(shù)：pRen?=?渲染器；nSpacing?=?棋盤線距；pFont?=?字體；text?=?文字內(nèi)容；c?=?文字顏色 void?PrintString(SDL_Renderer?*pRen,?int?nSpacing,?TTF_Font?*pFont,?char?*text,?int?c) {SDL_Texture?*pTextTxt;SDL_Rect?rt;rt.x?=?nSpacing;rt.y?=?nSpacing?*?(MAX_LINES?+?1);rt.w?=?nSpacing?*?strlen(text)?/?4;?//?這個(gè)?4?和字體大小有關(guān)rt.h?=?nSpacing;if((pTextTxt?=?GetTextTexture(pRen,?pFont,?text,?c))?!=?NULL){SDL_RenderCopy(pRen,?pTextTxt,?NULL,?&rt);SDL_DestroyTexture(pTextTxt);} }

為了統(tǒng)一，把獲得紋理的模塊也稍微改了下格式

//?MySDL_Texture.h //?SDL2?公共函數(shù)?-?取得?RGB、圖片、文字的紋理#include?<SDL2/SDL.h> #include?<SDL2/SDL_image.h> #include?<SDL2/SDL_ttf.h>#ifndef?MYSDL2_TEXTURE_H #define?MYSDL2_TEXTURE_H//?取得?RGB?紋理 //?參數(shù)：pRen?=?渲染器；w,?h?=?寬、高；c?=?顏色 //?返回值：紋理指針 SDL_Texture?*GetRGBTexture(SDL_Renderer?*pRen,?int?w,?int?h,?int?c);//?取得圖片文件紋理 //?參數(shù)：pRen?=?渲染器；FileName?=?圖片文件名；bTrn?=?是否透明處理；c?=?背景色 //?返回值：紋理指針 SDL_Texture?*GetImageTexture(SDL_Renderer?*pRen,?char?*FileName,?_Bool?bTrn,?int?c);//?取得文字紋理 //?參數(shù)：pRen?=?渲染器；pFont?=?字體；text?=?文字內(nèi)容；c?=?文字顏色 //?返回值：紋理指針 SDL_Texture?*GetTextTexture(SDL_Renderer?*pRen,?TTF_Font?*pFont,?char?*text,?int?c);#endif //?MySDL_Texture.c //?SDL2?公共函數(shù)?-?取得?RGB、圖片、文字的紋理#include?"MySDL_Texture.h"//?取得?RGB?紋理 //?參數(shù)：pRen?=?渲染器；w,?h?=?寬、高；c?=?顏色 //?返回值：紋理指針 SDL_Texture?*GetRGBTexture(SDL_Renderer?*pRen,?int?w,?int?h,?int?c) {SDL_Texture?*pTexture;SDL_Surface?*pSurface;if((pSurface?=?SDL_CreateRGBSurface(0,?w,?h,?32,?0,?0,?0,?0))?==?NULL)return?NULL;SDL_FillRect(pSurface,?NULL,?c);pTexture?=?SDL_CreateTextureFromSurface(pRen,?pSurface);SDL_FreeSurface(pSurface);return?pTexture; }//?取得圖片文件紋理 //?參數(shù)：pRen?=?渲染器；FileName?=?圖片文件名；bTrn?=?是否透明處理；c?=?背景色 //?返回值：紋理指針 SDL_Texture?*GetImageTexture(SDL_Renderer?*pRen,?char?*FileName,?_Bool?bTrn,?int?c) {SDL_Texture?*pTexture;SDL_Surface?*pSurface;if((pSurface?=?IMG_Load(FileName))?==?NULL)return?NULL;if(bTrn)SDL_SetColorKey(pSurface,?1,SDL_MapRGB(pSurface->format,?c>>16,?(c>>8)&0xFF,?c&0xFF));pTexture?=?SDL_CreateTextureFromSurface(pRen,?pSurface);SDL_FreeSurface(pSurface);return?pTexture; }//?取得文字紋理 //?參數(shù)：pRen?=?渲染器；pFont?=?字體；text?=?文字內(nèi)容；c?=?文字顏色 //?返回值：紋理指針 SDL_Texture?*GetTextTexture(SDL_Renderer?*pRen,?TTF_Font?*pFont,?char?*text,?int?c) {SDL_Texture?*pTexture;SDL_Surface?*pSurface;SDL_Color?color?=?{c>>16,?(c>>8)&0xFF,?c&0xFF};if((pSurface?=?TTF_RenderUTF8_Blended(pFont,?text,?color))?==?NULL)return?NULL;pTexture?=?SDL_CreateTextureFromSurface(pRen,?pSurface);SDL_FreeSurface(pSurface);return?pTexture; }

把 Makefile 也貼出來(lái)吧

SourceFile?=?Five.c?FiveData.c?MySDL_Dialog.c?MySDL_Button.c?MySDL_Texture.c Library????=?-lSDL2?-lSDL2main?-lSDL2_image?-lSDL2_ttf?-lSDL2_mixerALL:?$(SourceFile)?Makefilegcc?-mwindows?-o?Five?$(SourceFile)?$(Library)

數(shù)據(jù)處理部分、圖片文件、聲音和前面一樣。

另外，這個(gè)辦法在安卓下無(wú)效，原因不明。

轉(zhuǎn)載于:https://my.oschina.net/u/580100/blog/614964

總結(jié)

以上是生活随笔為你收集整理的SDL2 自建对话框的全部?jī)?nèi)容，希望文章能夠幫你解決所遇到的問(wèn)題。

如果覺(jué)得生活随笔網(wǎng)站內(nèi)容還不錯(cuò)，歡迎將生活随笔推薦給好友。