Question

在vb.net中制作Windows窗体应用程序时，我遇到了这个错误：

System.OverflowException：'算术运算导致溢出。'

我的代码：

Imports System.Runtime.InteropServices

Public Class Form1
    <DllImport("dwmapi.dll")>
    Private Shared Sub DwmGetColorizationColor(ByRef ColorizationColor As UInteger, ByRef ColorizationOpaqueBlend As Boolean)
    End Sub

    Private Function UintToColor(ByVal argb As UInteger)
        Dim a = argb >> 24
        Dim r = argb >> 16
        Dim g = argb >> 8
        Dim b = argb >> 0
        Return Color.FromArgb(a, r, g, b)
    End Function

    Dim windowColor
    Dim windowBlend

    Private Sub Form1_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        Me.Show()
        DwmGetColorizationColor(windowColor, windowBlend)
        Me.BackColor = UintToColor(windowColor)
    End Sub
End Class

该函数返回（来自“autos”）：

a：227 r：55182 g：14876783 b：3808456647 argb：3808456647

Answer 1

我认为你正试图将uint拆分为Byte大小的块。

也许试试这个

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int main(int argc, char** argv) {
  char content[255];
  FILE *fp1, *fp2;
  fp1 = fopen("test1.mal", "r");
  fp2 = fopen("output.txt", "w");

  if(fp1 == NULL || fp2 == NULL){
   printf("error reading file\n");
   exit(0);
  }
  printf("files opened correctly\n");

  // read from input file and write to the output file
  while(fgets(content, sizeof (content), fp1) !=NULL) {
    fputs(content, fp2);
  }

  fclose(fp1);
  fclose(fp2);
  printf("file created and text copied\n");
  return 0;
}

算术运算导致Color.FromArgb

1 个答案: