Question

vc++ 如何实现文字滚动

假设文字为“蓝蓝的天”，如何在窗口中让文字向左滚动呢？

Answer 1

用一个SetTimer（）的函数定时给窗口发送WM_TIMER信息，然后改变文字位子，不停的输出刷新，改变位子，输出刷新就行了，下面是窗口处理函数：
LRESULT CALLBACK WinProc(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam )

{
//全局变量

HDC hdc;
PAINTSTRUCT sp;
static WORD xplace=0;
static char *water="蓝蓝的天";
static WORD wordlong=5*strlen(water);

//
switch(uMsg)
{

case WM_CREATE:
SetTimer(hwnd,1,200,NULL);
break;
case WM_TIMER:
InvalidateRect(hwnd,NULL,TRUE);
break;

case WM_PAINT:
//内容

hdc=BeginPaint(hwnd,&sp);
TextOut(hdc,xplace,0,water,strlen(water));
xplace+=5;
EndPaint(hwnd,&sp);
break;

case WM_CLOSE:
if (IDYES==MessageBox(hwnd,"确实要关闭吗？","sb",MB_YESNO))
{
DestroyWindow(hwnd);
}
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}

return 0;
}

Answer 2

#include <stdio.h>
#include <string.h>
#include <windows.h>
void main()
{
char *word="蓝蓝的天";
int len=strlen(word);
int scr=79;

printf("\n");
int i=0;
while(1)
{
for(int j=0;j<scr;)
{
if(j==(scr-len-i))
{
printf(word);
j+=len;

}else
{
printf(" ");
j++;

}

}
printf("\r");
Sleep(100);
i++;
if(i==(scr-len))
i=0;
}
printf("\n");

}