Suppressing "Cannot Find MYDLL.DLL" Error Box

MORE INFORMATION

SetErrorMode() only affects the error mode of the current task and does not affect the entire system. The return value may be used to toggle the error mode in different portions of an application.

For an implicitly loaded DLL that may be missing, the system will display the aforementioned error box if the application is run from Program Manager. After clicking the OK button, the following message appears: From File Manager, no "file error" message box appears, but the following message is displayed instead: Because these error messages appear before the WinMain() of the application executes, SetErrorMode() cannot suppress the error message boxes for implicitly linked DLLs. Furthermore, there is no way to configure Program Manager to suppress the "file error" message box.

Sample Code

 {
 HINSTANCE hDLL;
 UINT uOldErrorMode;

 uOldErrorMode = SetErrorMode(SEM_NOOPENFILEERRORBOX);

 // Try to load DLL.
 hDLL = LoadLibrary("MYDLL.DLL");

 if (hDLL == 2)
    MessageBox(NULL, "MYDLL.DLL does not exist", "ERROR", MB_OK);
 else if (hDLL <= HINSTANCE_ERROR)
    MessageBox(NULL, "Other problems loading MYDLL.DLL, "ERROR", MB_OK);
 else
 {
    MessageBox(NULL, "MYDLL.DLL exists", "SUCCESS", MB_OK);
    FreeLibrary(hDLL);
 }

 SetErrorMode(uOldErrorMode);  // Can restore error mode if desired.
 }