我有一个不幸的任务，即建立一个没有经验或教育的GUI。以下代码不会在没有错误的情况下更新数字。我认为这是由于函数showFIGWINDOW（第38行没有提供WALL_L和WALL_R句柄来运作refreshFIG（第86行）。
我觉得这是问题所在，因为当我将它们直接复制并粘贴到命令窗口时，这些功能起作用，但是当我按下“运行”时则不行。我怎样才能克服这个问题＆＃34;没有足够的输入论据（第115行）＆＃34;
任何帮助都会很出色。请原谅我的烂摊子，我编码：
function Canyon_Racer
close all
clear
clc
WIDTH_LIMIT=.005; %CONTROLS RATE OF WALL CLOSURE
DROP_COUNT=5;
CWALL_L1=0;
CWALL_L2=0;
CWALL_L3=1;
CWALL_L4=1;
CWALL_L5=0;
CWALL_L6=30;
CWALL_L7=30;
CWALL_L8=0;
CWALL_R1=14;
CWALL_R2=14;
CWALL_R3=16;
CWALL_R4=16;
CWALL_R5=0;
CWALL_R6=30;
CWALL_R7=30;
CWALL_R8=0;
CWALL_Y=30;
CLOSE=2;
CWALL_LMAX=1;
CWALL_RMIN=14;
CWALL_TMAX=30;
DELAY=.25;
POLY_NUM=1;
WALL_WIDTH=14;
gameEND=0; %causes game to intiate and continue
% TITLE = ['Welcome to CANYON RUN' 10 10 ' Out run the bandits on your tail to sruvive!' 10 10 '...but don' 10 10 'crash into the canyon walls or you' 10 10 're history' 10 10
% ' player 1: player 2:' 10 10 ' use (LEFT) and (RIGHT) arrow keys to stay between the walls' 10 10];
function showFIGWINDOW
scrsz = get(0,'ScreenSize');
fig = figure('Position',[0, 0, 1, 1]);
set(fig , 'Units', 'Normalized', 'OuterPosition', [0 0 .75 .75], 'color', [127 84 23]./255); %display full screen
% CanyonWallX_L = [CWALL_LMIN CWALL_LMAX];
% CanyonWallX_R = [CWALL_RMIN CWALL_RMAX];
subplot('position', [0 0 1 1])
axis([0 15 0 30])
hold all
WALL_L = patch([CWALL_L1 CWALL_L2 CWALL_L3 CWALL_L4], [CWALL_L5 CWALL_L6 CWALL_L7 CWALL_L8], [0 0 0], 'edgecolor', 'none');
WALL_R = patch([CWALL_R1 CWALL_R2 CWALL_R3 CWALL_R4], [CWALL_R5 CWALL_R6 CWALL_R7 CWALL_R8], [0 0 0], 'edgecolor', 'none');
set(WALL_L, 'FaceColor', [127 84 23]./255)
set(WALL_R, 'FaceColor', [127 84 23]./255)
set(gca, 'XTick', [],'YTick', [], 'color', [184 95 0]./255)
set(fig,'Name','Canyon Racer v1.0','NumberTitle','off', 'toolbar', 'none', 'menubar', 'none')
movegui(fig,'center');
RACER_handle = patch([5 6 5.5], [3 3 5.5], [0 0 0]);
%%% Check this for uicontrol stuff: http://www.mathworks.com/help/matlab/ref/uicontrol.html
TBX = uicontrol( 'style', 'edit', 'String', 'Hi', 'Position', [.5, .5, 100.5, 15.5] );%%%%%%% DR. V
%%% Check out the "KeyPressFcn/KeyReleaseFcn portion of this:
%%% http://www.mathworks.com/help/matlab/ref/figure_props.html
set(fig, 'KeyPressFcn', {@KeyPressed, TBX, RACER_handle} ) %%%%%%% DR. V
set(fig, 'KeyReleaseFcn', {@KeyReleased, TBX}) %%%%%%% DR. V
end
function newGame
end
function KeyPressed( src, event, TBX, RACER_handle) %%%%%%% DR. V
set( TBX, 'String', sprintf('%s Pressed', event.Key ) );%%%%%%% DR. V
if strcmp(event.Key, 'leftarrow')
MOVE_handle = get(RACER_handle,'XData');
set(RACER_handle, 'XData', MOVE_handle-.1 );
elseif strcmp(event.Key, 'rightarrow')
MOVE_handle = get(RACER_handle,'XData');
set(RACER_handle, 'XData', MOVE_handle+.1 );
end
end %%%%%%% DR. V
function KeyReleased( src, event, TBX) %%%%%%% DR. V
set( TBX, 'String', sprintf('%s Released', event.Key ) );%%%%%%% DR. V
end %%%%%%% DR. V
function refreshFIG( src, event, WALL_L, WALL_R)
pause(DELAY)
SPEED_MOVE=1;
% if DROP_COUNT==5
%
% CWALL_L3=randi(CLOSE);
% while CWALL_L3>CLOSE
% CWALL_L3=randi(CLOSE);
% end
% if POLY_NUM==0
% WALL_L = patch([0 0 CWALL_L3 CWALL_L4], [CWALL_Y CWALL_Y+5 CWALL_Y+5 CWALL_Y], [0 0 0], 'edgecolor', 'none');
% WALL_R = patch([CWALL_L4+WALL_WIDTH CWALL_L3+WALL_WIDTH 15 15], [CWALL_Y CWALL_Y+5 CWALL_Y+5 CWALL_Y], [0 0 0], 'edgecolor', 'none');
% set(WALL_L, 'FaceColor', [127 84 23]./255)
% set(WALL_R, 'FaceColor', [127 84 23]./255)
% CWALL_L4=CWALL_L3;
% elseif POLY_NUM>0
% WALL_L = patch([0 0 CWALL_L3 CWALL_L4], [CWALL_Y CWALL_Y+5 CWALL_Y+5 CWALL_Y], [0 0 0], 'edgecolor', 'none');
% WALL_R = patch([CWALL_L4+WALL_WIDTH CWALL_L3+WALL_WIDTH 15 15], [CWALL_Y CWALL_Y+5 CWALL_Y+5 CWALL_Y], [0 0 0], 'edgecolor', 'none');
% set(WALL_L, 'FaceColor', [127 84 23]./255)
% set(WALL_R, 'FaceColor', [127 84 23]./255)
% CWALL_L4=CWALL_L3;
% end
% if POLY_NUM==6
% POLY_NUM=1;
% end
%
% end
DROP_WALL_L = get(WALL_L, 'YData');
set(WALL_L, 'YData', DROP_WALL_L-SPEED_MOVE)
DROP_WALL_R = get(WALL_R, 'YData');
set(WALL_R, 'YData', DROP_WALL_R-SPEED_MOVE)
% for NUM=(1:POLY_NUM)
% DROP_WALL_L = get(WALL_L(NUM), 'YData');
% set(WALL_L(NUM), 'YData', DROP_WALL_L-SPEED_MOVE)
% DROP_WALL_R = get(WALL_R(NUM), 'YData');
% set(WALL_R(NUM), 'YData', DROP_WALL_R-SPEED_MOVE)
% end
POLY_NUM=POLY_NUM+1;
% DROP_COUNT=DROP_COUNT+1;
% CWALL_LMAX=CWALL_LMAX+WIDTH_LIMIT; %LEFT WALL CLOSING IN
% CWALL_RMIN=CWALL_RMIN-WIDTH_LIMIT; %RIGHT WALL CLOSING IN
% WALL_L = patch([0 CWALL_LMAX], [CWALL_TMAX CWALL_TMAX]); %POST TO FIG WINDOW
% WALL_R = patch([CWALL_RMIN, 15], [CWALL_TMAX CWALL_TMAX]); %POST TO FIG WINDOW
% set(WALL_L, 'FaceColor', [127 84 23]./255) %FIG WALL AREA COLOR
% set(WALL_R, 'FaceColor', [127 84 23]./255) %FIG WALL AREA COLOR
end
%Game Primary Script
showFIGWINDOW
newGame
while gameEND==0
% moveWall;
refreshFIG;
% checkWALL;
end
% close(fig);
%
%
end
答案 0 :(得分：2)
我有一个不幸的任务，即建立一个没有经验或教育的GUI。
如果您拥有优秀的MATLAB documentation，则无需经验和教育。
发生此错误是因为graphics handles WALL_R和WALL_L在nested function showFIGWINDOW中定义，但在另一个嵌套函数{{1}中使用}。要使这两个句柄在两个嵌套函数中都可见，它们应该在父函数中定义。所以，添加行
refreshFIG在主要功能的开头（例如，在WALL_L=0;
WALL_R=0;
之后）。
但这还不够，因为这些句柄被错误地重新定义为行中WALL_WIDTH=14;的参数
refreshFIG因此，当调用此函数时，在父函数中定义的这些句柄将被同名的参数隐藏（在function refreshFIG( src, event, WALL_L, WALL_R)
的调用中未定义）。要解决此问题，请从函数参数中删除句柄名称。
此后游戏似乎运行顺利，但与some other canyon racing相比，它有点无聊;）